1 .  একটি আয়তক্ষেত্রের প্রস্থের দ্বিগুণ দৈর্ঘ্য অপেক্ষা 23  মিটার বেশি। আয়তক্ষেত্রের ক্ষেত্রফল 600 বর্গমিটার হলে, তার দৈর্ঘ্য ও প্রস্থ নির্ণয় করুন।  

• A. দৈর্ঘ্য 24 মিটার এবং প্রস্থ 23 মিটার
• B. দৈর্ঘ্য 25 মিটার এবং প্রস্থ 24 মিটার
• C. দৈর্ঘ্য 26 মিটার এবং প্রস্থ 25 মিটার
• D. দৈর্ঘ্য 30 মিটার এবং প্রস্থ 20 মিটার

Answer: Option B

Explanation:

2 . কোন প্রক্রিয়ায় 234/90Th থেকে 234/91Pa তৈরি হয়?

• A. a-emission
• B. B-emission
• C. Y-emission
• D. neutron-emission

Answer: Option B

Explanation:

3 . Which one of the following represent the binary equivalent of the decimal number 23?  

• A. 01011
• B. 10111
• C. 10011
• D. None of these

Answer: Option B

Explanation:

4 . Which one of the following represent the binary equivalent of the decimal number 23?  

• A. 01011
• B. 10111
• C. 10011
• D. None

Answer: Option B

Explanation:

5 . H.323 Protocol সাধারণত কি কাজে ব্যবহৃত হয়?

• A. File transfer
• B. VoiP
• C. Data security
• D. File download

Answer: Option B

Explanation:

6 . The different between the length and breath of rectangle is 23 meter. If its perimeter is 206 meter, then, its area is-

• A. 1520 sq meter
• B. 2420 sq meter
• C. 2480 sq meter
• D. 2520 sq meter

Answer: Option D

Explanation:

7 . International efforts to protest animals often aim to prevent animals from going exist or losing their natural habitats. many countries prohibit imports of ivory through laws that Many countries prohibit imports of ivory through laws that commonly include the African Elephant conversion Act of 1989. but ivory remains in demand in. various parts of the world. According to a 2013 report from the Los Angeles Times in 2012 at least 25,000 African elephants were slaughtered by criminal gangs eager to market the lucrative ivory from their tusk. The poachers' take has risen to alarming levels over the last twelve years. with about one in 17 wild elephants being fallen in 2017, by some estimate Elephant populations have fallen from 5 million a century ago to fewer than 420,000 today. The situation is equally worse for other species . In united States ,623 animal species are listed mammalian specs such a bear, foxes ocelots, otters panthers, rats and wales. The International Union for conversation of Nature (IUCN) Produces a red list of animal and plant species that are endangered around the world However the mountains gorillas in Eastern Africa are making a comeback with a 26 percent increase in population after many years of conversation efforts. Such success are due of the fact that there are most protected areas in the world, including wildlife refuges and reserves. Producing res list can help to-

• A. motivate the hunters
• B. combat the situation
• C. save the sorld
• D. rescue African animals

Answer: Option C

Explanation:

8 .  কোন বৃত্তের পরিধি 23 সে.মি হলে ব্যাসার্ধ সে.মি?

• A. 2.33
• B. 3.66
• C. 7.32
• D. 11.50

Answer: Option B

Explanation:

9 . Half life of Uranium-238 is-

• A. 4510000000 years
• B. 82000 years
• C. 269000 years
• D. None of these

Answer: Option D

Explanation:

10 . Qatar successfully retained its title of AFC Asian Cup 2023 by defeating . . . . . in the final.

• A. Japan
• B. Saudi Arabia
• C. Iran
• D. Jordan

Answer: Option D

Explanation:

11 . 0.9623 - 31 = কত?

• A. -30.0377
• B. -29.0377
• C. -32.8246
• D. -31.0377

Answer: Option A

Explanation:

12 . 5.125/2.223 =?

• A. 2.053
• B. 2.305
• C. 2.501
• D. 2.522

Answer: Option B

Explanation:

13 . A, B and C enter into partnership with investments in the ratio of 5 : 7 : 8. If at the end of the year A's share of profit is Tk.42360, ow much is the total profit?

• A. Tk.169440
• B. Tk.183000
• C. Tk.196700
• D. Tk.168440

Answer: Option A

Explanation:

14 . The sum of two numbers is 23 and difference is 21. What is the smaller of the two numbers?

• A. 4
• B. 3
• C. 2
• D. 1

Answer: Option D

Explanation:

15 . 3/2 + log223/2 = কত?

• A. 0
• B. 1
• C. 3/2
• D. 2/5

Answer: Option B

Explanation:

16 . 2- 1 × 3- 1 × 23 = কত?

• A. 9
• B. 4/3
• C. 2/3
• D. 4

Answer: Option B

Explanation:

17 . কোনো বৃত্তের পরিধি 23 সেমি হলে এর ব্যাসার্ধ কত?

• A. 2.33 সেমি
• B. 3.66 সেমি
• C. 7.32 সেমি
• D. 11.5 সেমি

Answer: Option B

Explanation:

18 . -4a² + 23a + 6 এর উৎপাদক কোনটি?

• A. (6 - a)(4a - 1)
• B. (a - 6)(4a - 1)
• C. (a - 6)(4a + 1)
• D. (6 - a)(4a + 1)

Answer: Option D

Explanation:

19 . 4(x - 23) = 0 হলে x এর মান কত?

• A. 23
• B. -23
• C. 83
• D. -83

Answer: Option A

Explanation:

20 . 23x - 6 = 11x + 6 সমীকরণে x এর মান কত?

• A. 8
• B. 0
• C. 2
• D. 1

Answer: Option D

Explanation:

21 . 13 + 23 + 33 + .............. + n3 ধারাটির যোগফল কত?

• A. n(n + 1)2
• B. n(n + 1)(2n + 1)6
• C. n(n + 1)3
• D. {n(n+1)/2}2

Answer: Option D

Explanation:

22 . Rad the passage below and choose the alternative A, B, C or D to answer the questions (18-23)  Washington was the first city in history to be created solely for the purpose of governance. Following the Revolution, members of congress had hotly debated the question of a permanent home for themselves and for those departments- the Treasury, the patent Office, and so on - Which even the sketchiest of central governments would feel obliged to establish.  In 1790, largely in order to put an end to congressional bickering, George Washington was charged with selecting a site for the newly designated federal district. Not much to anyone's surprise but to the disappointment of many, he chose a tract of land on the banks of the Potomac River, a few miles upstream from his beloved plantation Mount Vernon. The District  of Columbia was taken in part from Virginia and in part from Maryland. at the time is was laid out, its hundred square miles consisted of gently rolling hills, some under cultivation and the rest heavily wooded, with a number of creeks and much swampy land along the Potomac. There is now a section of Washington that is commonly referred to as Foggy Bottom; that section bore the same nickname a hundred and eighty years ago. two port cities, Alexandria and Georgetown, flourished within sight of the new capital and gave is access by ship to the most important cities of the infant nation- Charleston, Baltimore, Philadelphia, New York, Newport, Salem and Portsmouth- and also to the far- off ports of England and the Continent.    16.Why was George Washington's choice for the site of the - capital not very surprising?  

• A. George Washington had lived on the site before the American Revolution.
• B. The river would bring trade to the city.
• C. The site was very close to George Washington's own home.
• D. The member of Congress hade already state there preference for the site.

Answer: Option B

Explanation:

23 . Who Scored the only goal in the final match of 23021 SAFF U- 19 Women's Championship?

• A. Shaheda Akter, Ripa
• B. Anai Mogini
• C. Maria Manda
• D. Anishka

Answer: Option B

Explanation:

24 . H . 323 Protocol সাধারণত কি কাজে ব্যবহৃত হয়?

• A. File transfer
• B. VolP
• C. Data Security
• D. File download

Answer: Option B

Explanation:

25 . Mita Ahmed, a Dhaka resident, went shopping. She is 30, and has lived at 23/2 College road since 1992. Mita _________ to Rifat Ahmed for seven years.

• A. has been married
• B. married
• C. was married
• D. is married

Answer: Option C

Explanation:

26 . Which one the 23rd land port of Bangladesh?

• A. Akkarua
• B. Balla
• C. Bianibazar
• D. Sheola

Answer: Option B

Explanation:

27 . Two number are in the ratio 3:5 . If 9 is subtracted form each , the new numbers are in the ratio 1223. The smaller number is

• A. 27
• B. 33
• C. 49
• D. 55

Answer: Option B

Explanation:

28 . Moungi Bawendi, Louis Brus, and Alexei Ekimov won the Nobel in Chemistry in 2023 in the area of - 

• A. Development of click chemistry and bioorthogonal chemistry
• B. The discovery and synthesis of quantum dots
• C. Development bioorthogonal chemistry
• D. None of these

Answer: Option B

Explanation:

29 . In Asian Games 2023, Bangladesh did win how many medals?

• A. One Silver and One Bronze
• B. Two Bronzes
• C. Two Silvers
• D. One Gold and One silver

Answer: Option B

Explanation:

30 . The name of Bangladeshi who got the Ramon Magsaysay Award 2023 is--

• A. Korvi Rakshand
• B. Syeda Rizwana Hasan
• C. Firdausi Qadri
• D. Noman Khan

Answer: Option A

Explanation:

31 . The preferred stock of Jay's Comics currently sells for Tk. 23.25 per share. The annual dividend of Tk. 1.50 is fixed. Assuming a constant dividend forever,what is the rate of return on this stock ?

• A. 3.49 percent
• B. 6.45 percent
• C. 8.06 percent
• D. 8.50 percent

Answer: Option B

Explanation:

32 . Sum of 2 numbes is 23 and the difference is 21. What is the smallest of the two numbers?

• A. 4
• B. 3
• C. 2
• D. None of these

Answer: Option D

Explanation:

33 . On 21 November 2023 which country closed its embassay in Bangladesh?

• A. North Korea
• B.
• C.
• D.

Answer: Option F

Explanation:

34 . Which Bangladeshi art was listed as 'Intangible Cultural Heritage' by UNESCO on 6 December 2023?

• A. Rickshaws and rickshaw painting in Dhaka.
• B.
• C.
• D.

Answer: Option F

Explanation:

35 . Which position did Prime Minister Sheikh Hasina secure in the Forbes 2023 list?

• A. 46 position (42 position in the earlier list
• B.
• C.
• D.

Answer: Option F

Explanation:

36 . Which Bangladeshi person received World Football Summit Award 2023?

• A. Nobel Laureate Professor Muhammad Yunus
• B.
• C.
• D.

Answer: Option F

Explanation:

37 . 20 December 2023 which country decided to change the design of its flag?

• A. Kyrgyzstan
• B.
• C.
• D.

Answer: Option F

Explanation:

38 . Who ranked top in the Forbės 2023 annual ranking of The World's 100 Most Powerful Women?

• A. European Commission President Ursula von der Leyen.
• B.
• C.
• D.

Answer: Option F

Explanation:

39 . A, B C center into partnership with investments in the ratio of 5:7:8. If at the end of the year A's share of profit is Tk. 42360, how much is the total profilt?

• A. Tk. 169,440
• B. Tk. 183,000
• C. Tk. 196,700
• D. Tk. 168,440

Answer: Option A

Explanation:

40 . At present Lili is 23 years old and Medrin is 15 years old. How many years ago was Lili twice as old as Mehrin?

• A. 7
• B. 16
• C. 9
• D. 5

Answer: Option A

Explanation:

41 . Which one number does not belong to the following series ? 3, 5, 8, 11, 17, 23

• A. 8
• B. 11
• C. 17
• D. 23

Answer: Option B

Explanation:

42 . Three number are added in pairs , the sums so obtained are 20,27 and 23. What are those three numbers?

• A. 6,4and 15
• B. 9, 11 and 14
• C. 8, 12 and 15
• D. 10, 8 and 17

Answer: Option C

Explanation:

43 . The sum o three integers is 40. The largest integer is 3 times the middle integer, and the smallest integer is 23 less than the largest integer. what is the product of the three integers?

• A. 1104
• B. 972
• C. 672
• D. 294

Answer: Option B

Explanation:

44 . In England is written as 1234526 and France as 785291, the Greece will be written as ---

• A. 392291
• B. 382292
• C. 381191
• D. 392191

Answer: Option C

Explanation:

45 . If the word EXAMINATION is written as 8912316354, what word does 456354 stand for?

• A. NATION
• B. RATION
• C. NOTION
• D. STATION

Answer: Option C

Explanation:

46 . In the January-October period of 20231 Bangladesh retained the top position in garment export ta which country?

• A. United Kingdom
• B.
• C.
• D.

Answer: Option F

Explanation:

47 . Which country overtakes Japan as third-biggest economy in the year 2023?

• A. Germany
• B.
• C.
• D.

Answer: Option F

Explanation:

48 . প্রাকৃতিক ইউরেনিয়ামে শতকরা কত ভাগ 238U আইসোটোপ থাকে?

• A. 50%
• B. 99.3%
• C. 0%
• D. 69.3%

Answer: Option B

Explanation:

49 . A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

• A. 11 days
• B. 13 days
• C. 20x3/17 𝑑𝑎𝑦𝑠
• D. None of these

Answer: Option B

Explanation:

50 . What least number must be added to 1056, so that the sum is completely divisible by 23?

• A. 2
• B. 3
• C. 18
• D. 21

Answer: Option A

Explanation:

51 . Two numbers are in the ratio 3:5. If 9 is subtracted from each, the new numbers are in the ratio 12: 23. the smaller number is:

• A. 27
• B. 33
• C. 49
• D. 55

Answer: Option B

Explanation:

52 . যদি MOUTH= 12357 হয়, তবে TOUT= কত হবে ?

• A. 2357
• B. 7532
• C. 5235
• D. 5523

Answer: Option C

Explanation:

53 . PA=13; PB=23;

• A. $\frac{3}{4}$
• B. $\frac{2}{3}$
• C. $\frac{1}{3}$
• D. $\frac{1}{4}$

Answer: Option B

Explanation:

54 . x+213+223=0

• A. $4x$
• B. $6x$
• C. $4$
• D. $8$

Answer: Option B

Explanation:

55 . Traffic Index by City 2023 অনুযায়ী যানজটে শীর্ষ শহর  কোনটি?

• A. করাচি
• B. ঢাকা
• C. মুম্বাই
• D. লাগোস

Answer: Option D

Explanation:

56 . 5n+235×5n-14×5n=?

• A. 4
• B. 8
• C. 5
• D. 7

Answer: Option B

Explanation:

57 . 36×23x-8=32

• A. $\frac{7}{3}$
• B. $3$
• C. $\frac{8}{3}$
• D. $2$

Answer: Option D

Explanation:

58 . 12527-23

• A. $\frac{১}{২৫}$
• B. $\frac{৫}{২০}$
• C. $\frac{৯}{২৫}$
• D. $\frac{৩}{২০}$

Answer: Option C

Explanation:

59 . 12

• A. 63
• B. 36
• C. 35
• D. 53

Answer: Option B

Explanation:

60 . 82x+3=23x+6

• A. $-3$
• B. $-1$
• C. $1$
• D. $4$

Answer: Option B

Explanation:

61 . 23

• A. $\frac{3\sqrt{3}}{4}$
• B. $3\sqrt{3}$
• C. $9$
• D. $3$

Answer: Option B

Explanation:

62 . 13+23+33+·····+n3=

• A. $\frac{n\left(n+1\right)}{2}$
• B. $\frac{n\left(n+1\right)\left(2n+1\right)}{6}$
• C. ${\left\{\frac{n\left(n+1\right)}{2}\right\}}^2$
• D. একটিও নয়

Answer: Option C

Explanation:

63 . A credit sale of Tk. 7,500 is made on June 13, terms 2/10, net/30. A return of Tk. 500 is granted on June 16. The amount received as payment in full on June 23 is

• A. Tk. 7,000
• B. Tk. 6,860
• C. Tk. 6,850
• D. Tk. 6,500

Answer: Option B

Explanation:

64 . 4x-23=0

• A. $\frac{2}{3}$
• B. $\frac{-2}{3}$
• C. $\frac{8}{3}$
• D. $\frac{-8}{3}$

Answer: Option A

Explanation:

65 . 11, 15, 23, 39 ......... ক্রমটির পরবর্তী সংখ্যা কত?

• A. 45
• B. 55
• C. 71
• D. 81

Answer: Option C

Explanation:

66 . একটি আয়তক্ষেত্রের পরিসীমা 64 মিটার এবং তার ক্ষেত্রফল 231 বর্গমিটার। ক্ষেত্রটির দৈর্ঘ্য কত মিটার?

• A. 24
• B. 16
• C. 21
• D. 23

Answer: Option C

Explanation:

67 . Katalin Karikó and Drew Weissman got the Noble Prize in 2023 in- 

• A. Economics
• B. Medicine
• C. Literature
• D. None of the these

Answer: Option B

Explanation:

68 . The 2023 FIFA Women's World Cup took place from 20 July to 20 August 2023, was jointly hosted by - 

• A. Australia and New Zealand
• B. Australia and France
• C. France and Germany
• D. France and New Zealand

Answer: Option A

Explanation:

69 . The 2023 ICC Cricket World Cup is an international cricket tournament which is hosted by India. This is -  

• A. 11th edition of World Cup Cricket
• B. 12th edition of World Cup Cricket
• C. 13th edition of World Cup Cricket
• D. 14th edition of World Cup Cricket

Answer: Option C

Explanation:

70 . The name of Asia's fastest male and female athlete as per Asian Games 2023 is-

• A. China's Xie Zhenye and GE Manqi
• B. China's Xie Zhenye and Sri Lankan Devindya Oshini Gunawardene
• C. China's Xie Zhenye and Indian Dhanalakshmi
• D. None of them

Answer: Option A

Explanation:

71 . There are 23 poles with a constant distance between each pole. A car takes 24 seconds to reach the 12th pole. How much more time will it take to reach the last pole?

• A. 40 seconds
• B. 44 seconds
• C. 48 seconds
• D. 46 seconds

Answer: Option C

Explanation:

72 . Which one of the following is the happiest country among Asian nations as per the recent UN's World Happiness Report 2023?

• A. Tajwan
• B. Singapore
• C. United Arab Emirates
• D. Malaysia

Answer: Option B

Explanation:

73 . The Nobel Prize in Literature-2023 is awarded to-

• A. Jon Fosse
• B. Claudia Goldin
• C. Narges Mohammad
• D. Drew Weissman

Answer: Option A

Explanation:

74 . Which country has the largest population in the world in 2023?

• A. USA
• B. India
• C. China
• D. Russia

Answer: Option B

Explanation:

75 . A is 30% more efficient than E How much time will they , working together , take to complete a job which A alone could have done in 23 days?

• A. 13 days
• B. 15 days
• C. 10 days
• D. None of these

Answer: Option A

Explanation:

76 . Tax-free income for individuals in Bangladesh for the tax years 2023-24 is-

• A. Taka 300, 000
• B. Taka 350,000
• C. Taka 400,000
• D. Taka 475,000

Answer: Option B

Explanation:

77 . The ICC World cup 2023 is going to be hosted by-

• A. Australia
• B. England
• C. India
• D. South Africa

Answer: Option C

Explanation:

78 . Three shirts and Five ties cost Tk. 23. Five shirts and one tie cost Tk. 20. What is the price of one shirt?

• A. Tk 3.50
• B. Tk. 2.50
• C. Tk. 6.00
• D. Tk. 3.00

Answer: Option A

Explanation:

79 . If PLAY is coded as 8123 and RHYME is coded as 49367 , how is MALE coded ?

• A. 6395
• B. 6198
• C. 6217
• D. 6285

Answer: Option C

Explanation:

80 . The average of 3 numbers is 24. If 2 of the number are 21 and 23,what is the 3rd number?

• A. 20
• B. 24
• C. 26
• D. 28
• D. 30

Answer: Option D

Explanation:

81 . The sum of three consecutive number is 123, The product of two smaller number is :

• A. 900
• B. 1600
• C. 1680
• D. 1640

Answer: Option D

Explanation:

82 . 2log23+log25

• A. 8
• B. 2
• C. 15
• D. 10

Answer: Option C

Explanation:

83 . 23?

• A. $\frac{7}{8}$
• B. $\frac{5}{6}$
• C. $\frac{3}{4}$
• D. $\frac{3}{5}$

Answer: Option D

Explanation:

84 . s { x ∈ N : 23 <  ও <29 এবং x মৌলিক সংখ্যা } হলে নিচের কোনটি সত্য?

• A. S ={24}
• B. S={25}
• C. S={26}
• D. S= ϕ

Answer: Option D

Explanation:

85 . x+213+223=0

• A. 4x
• B. 6x
• C. 4
• D. 8

Answer: Option B

Explanation:

86 . ২০২৩ সালে কোম্পানির সম্পদ ৭০,০০০ টাকা কমেছে এবং দায় ১,০০,০০০ কমেছে। কোম্পানির মালিকানা স্বত্ব কত? (In 2023, asset of the company decreased Tk. 70,000 and liability decreased Tk.1,00,000. What will be the owner's equityn)

• A. ৩০,০০০ টাকা বাড়বে (Tk. 30,000 increase)
• B. ৩০,০০০ টাকা কমবে (Tk.30,000 decrease)
• C. ১,৩০,০০০ টাকা কমবে (Tk. 1,30,000 decrease)
• D. ১,৩০,০০০ টাকা বাড়বে (Tk. 1,30,000 increase)

Answer: Option A

Explanation:

87 . x23

• A. $x^9$
• B. $x^{18}$
• C. $x^{27}$
• D. $x^{24}$

Answer: Option A

Explanation:

88 . 82x+3=23x+6

• A. -3
• B. -1
• C. 0
• D. 4

Answer: Option B

Explanation:

89 . Arabian প্লেটের সাথে কোন প্লেটের সংঘর্ষের কারণে 6 ফেব্রুয়ারি 2023 তারিখে তুরুস্কে ভয়াবহ ভূমিকম্প হয়?

• A. Turkey Plate
• B. Anatolian Plate
• C. Eurasian Plate
• D. African Plate

Answer: Option B

Explanation:

90 .   অ্যাকাডেমি অ্যাওয়ার্ডস ২০২৩-এ বিজয়ী শ্রেষ্ঠ চলচ্চিত্র হলো (The winner of the Academy Awards 2023 in the best picture category is -)

• A. Everything Everywhere All at Once
• B. The Whale
• C. RRR
• D. Women Talking

Answer: Option A

Explanation:

91 . What was the percentage of difective items produced at a factory? (1) The total number of difective items produced was 1234 (2) The ratio of defective items to nondefective items was 32 to 5678.

• A. Statement (1) ALONE is sufficient but statement (2) alone is not sufficient
• B. Statement (2) ALONE is sufficient but statement (1) alone is not sufficient
• C. Both statements TOGETHER are sufficient but NEITHER statement alone is sufficient
• D. EACH statement ALONE is sufficient

Answer: Option B

Explanation:

92 . যদি 7৮797 এর কোড 1234 এবং ROUGH এর কোড 65274 হয় তবে SOUP এর কোড হবে,

• A. 3521
• B. 1253
• C. 5312
• D. 1352

Answer: Option A

Explanation:

93 . England কে লিখা যায় 1234526 দ্বারা এবং France কে লিখা যায় 78591 দ্বারা তবে Greece কে লিখা যাবে ----..

• A. 83929 দ্বারা
• B. 392191 দ্বারা
• C. 382292 দ্বারা
• D. 381191 দ্বারা

Answer: Option D

Explanation:

94 . A=2357

• A. $\left[\begin{array}{cc}44& -1\\ -31& 1\end{array}\right]$
• B. $\frac{1}{13}\left[\begin{array}{cc}44& -1\\ -31& 1\end{array}\right]$
• C. $\frac{1}{13}\left[\begin{array}{cc}-44& 1\\ 31& -1\end{array}\right]$
• D. $\frac{1}{13}\left[\begin{array}{cc}-31& 1\\ 44& -1\end{array}\right]$

Answer: Option B

Explanation:

95 . -1+-32n+-1-32n=

• A. 2
• B. –2
• C. -1
• D. 1

Answer: Option C

Explanation:

96 . tan-1sincos-123=কত? 

• A. 0°
• B. 45°
• C. 30°
• D. 60°

Answer: Option C

Explanation:

97 . K=1.38×10-23/K-1?

• A. $1.38\times {10}^{-23}/mo{l}^{-1}$
• B. $8.31\times {10}^{-23}/mo{l}^{-1}$
• C. $1.38\times {10}^{-21}/mo{l}^{-1}$
• D. $6.21\times {10}^{-21}/mo{l}^{-1}$

Answer: Option D

Explanation:

98 . T90237h→P91237a+X

• A. নেগেটিভ বিটা পার্টিকেল (Negative beta particle)
• B. পজিট্রন (Positron)
• C. ইলেক্ট্রন (Electron)
• D. নিউট্রন (Neutron)

Answer: Option C

Explanation:

99 . 1234

• A. $-\frac{5}{2}$
• B. $-\frac{3}{2}$
• C. $\frac{3}{2}$
• D. $\frac{5}{2}$

Answer: Option A

Explanation:

100 . A=4235;B=61;X=xy;

• A. 2, -1
• B. 3,-1
• C. -1,3
• D. -1,1

Answer: Option A

Explanation:

101 . secθ=13123π2<θ<2π

• A. $\frac{5}{12}$
• B. $\frac{12}{5}$
• C. $-\frac{5}{12}$
• D. $-\frac{12}{5}$

Answer: Option A

Explanation:

102 . 0.231×10-3Y-1

• A. $3\times {10}^{-3}y$
• B. $3\times {10}^{3}y$
• C. $3\times {10}^{-4}y$
• D. $3\times {10}^{-5}y$

Answer: Option B

Explanation: