7366 . A student was asked to find the arithmetic mean of the numbers 3, 11. 7 .9, 15, 8, 19 ,17,14 and p. He found the mean to be 12. What should be the number in place of p?

A. 7
B. 3
C. 17
D. 31

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Answer: Option C

Explanation:

H e r e, \frac{3 + 11 + 7 + 9 + 15 + 8 + 19 + 17 + 14 + P}{10} = 12 \Rightarrow 103 + P = 120 \Rightarrow p = 17 . (A n s)

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সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021 || 2021

A. 10
B. 20
C. 40
D. 73

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Answer: Option C

Explanation:

নম্বর বেশি=83-63=20 প্রশ্নমতে, 0.5 অংশ বৃদ্ধি =20 1 অংশ বৃদ্ধি = \frac{20}{0.5} =40 ছাত্র= ছাত্রীর সংখ্যা=40

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তিতাস গ্যাস ট্রান্সমিশন অ্যান্ড ডিস্ট্রিবিউসন কো. লি.-সহকারী ব্যবস্থাপক-08-10-2021

A. 3
B. 4
C. 5
D. 6

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Answer: Option C

Explanation:

Hints: As their profit is equal at the end of the year, their ratio is equal to their capital ratio oppositly

Their capital ratio is = 21000 : 36000 = 21 : 36 = 7 : 12

So, their time ratio is equal to 12 : 7

A has contributed for 12 months

and B contributed for 7 months

So, B has joined after 12 - 7 = 5 months.

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পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. 5000
B. 5750
C. 6000
D. 6250
E. None

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Answer: Option D

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সাধারণ বীমা কর্পোরেশন || সহকারী ব্যবস্থাপক (08-11-2024) || 2024

A. 50%
B. 30%
C. 40%
D. 45%

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Answer: Option A

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7371 . A school has only four classes having 10, 20, 30 and 40 students respectively with pass percentage of 20%, 30%, 60% and 100% respectively. Find the pass-percentage of the entire school.

A. 0.56
B. 0.76
C. 0.34
D. 0.66

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Answer: Option D

Explanation:

4 টি ক্লাসে মোট ছাত্র আছে=10+20+30+40=100জন ১ম ক্লাসে পাশ করে 10 এর 20%= 2 জন ২য় ক্লাসে পাশ করে 20 এর 30%=6 জন ৩য় ক্লাসে পাশ করে 30 এর 60%=18 জন ৪র্থ ক্লাসে পাশ করে 40 এর 100%=40 জন মোট পাশ করে =2+6+18+40=66 জন শতকরা পাশ করে= (\frac{66}{100} ×100%) =66%

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বাংলাদেশ রপ্তানি প্রক্রিয়াকরণ কর্তৃপক্ষ (সহকারী ম্যানেজার) 02-04-2021

A. 13.34
B. 22.62
C. 34.14
D. 42.71

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Answer: Option B

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বাংলাদেশ সিকিউরিটিজ অ্যান্ড এক্সচেঞ্জ কমিশন(ব্যক্তিগত কর্মকর্তা) 19-06-2021

7373 . A right-angled triangle has a hypotenuse of length 10 cm and one of its acute angles measures 30°. What are the lengths of the other two sides?

A. $5 c m a n d 5 c m$
B. $5 c m a n d 10 c m$
C. $10 c m a n d 5 \sqrt{3} c m$
D. $5 c m a n d 5 \sqrt{3} c m$

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Answer: Option D

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Bangladesh Oil- Gas and Mineral Corporation (Petrobangla) || Assistant Manager (Electrical / Electronics/Chemical/Petroleum/Petroleum & Mining/IPE/ MME/Naval Architechture/ Telecom/ Geology/Geophysics/Chemistry/Environment/Marketing) (31-05-2024) || 2024

A. 5
B. 6
C. 3
D. 7

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Answer: Option C

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তিতাস গ্যাস ট্রান্সমিসন এন্ড ডিস্ট্রিবিউশন কোম্পানী লিমিটেড (TGTDCL) || সহকারী প্রকৌশলী (EEE) (24-05-2024) || 2024

A. 30%
B. 20%
C. 40%
D. 50%

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Answer: Option D

Explanation:

ম ন ে ক র ি, প ্ র ক ৃ ত ম ূ ল ্ য = 100 ট া ক া এ খ ন, ব া জ া র ম ূ ল ্ য 80 % ক ্ র য ় ম ূ ল ্ য 120 % \Rightarrow \frac{ব া জ া র ম ূ ল ্ য}{ক ্ র য় ম ূ ল ্ য} = \frac{120 %}{80 %} \Rightarrow ব া জ া র ম ূ ল ্ য = \frac{120}{80} \times ক ্ র য় ম ূ ল ্ য \Rightarrow \frac{120 \times 100}{80} \Rightarrow 150 ট া ক া ∴ ম ূ ল ্ য ব ৃ দ ্ ধ ি = 150 - 100 = 50 ট া ক া

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. 3.45 pm
B. 4.15 pm
C. 4.30 pm
D. 5.15 pm
E. 5.30 pm

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Answer: Option C

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা (NSI) - সহকারী পরিচালক (23-05-2025)

A. 55
B. 56
C. 57
D. 58

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Answer: Option B

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পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. 1/4
B. 2/3
C. 1/2
D. 3/4

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Answer: Option D

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ঢাকা ইলেকট্রিক সাপ্লাই কোম্পানি ।। Assistant Engineer (20-05-2023)

7379 . A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?

A. $\frac{p + q - q}{p q r}$
B. $\frac{p q + p r - p q}{p q r}$
C. $\frac{p q + q r - p r}{p q r}$
D. $\frac{p q r}{q r + p r - p q}$

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Answer: Option D

Explanation:

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বাংলাদেশ সেতু কর্তৃপক্ষ (সহকারী সাব-ইঞ্জিনিয়ার) 18-12-2020

A. 150
B. 148
C. 151
D. 174

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Answer: Option D

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সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

7366 . A student was asked to find the arithmetic mean of the numbers 3, 11. 7 .9, 15, 8, 19 ,17,14 and p. He found the mean to be 12. What should be the number in place of p?

7367 . A student's marks were wrongly entered as 83 instead of 63. Due to the error the average marks for the class got increased by 0.5. Find the number of students in the class.

7368 . A started a business with tk 21000 and is joined afterwards by B with tk 36000. After how many months did B join if the profits at the end of the year are divided equally?

7369 . A shopkeeper suffers a loss of 20% upon selling a shirt for Tk 4000. If he wants to make 15% profit after giving an 8% discount on the marked price, what is the marked price of the shirt, in Tk.?

7370 . A shopkeeper increase the price of an article first by 25% and then by 20%. What is the total percent increase:

7371 . A school has only four classes having 10, 20, 30 and 40 students respectively with pass percentage of 20%, 30%, 60% and 100% respectively. Find the pass-percentage of the entire school.

7372 . A right triangle has sides in the ratio of 5 : 12 : 13. What is the measure of the smallest angle in the triangle, in degrees?

7374 . A right angled triangle, whose perpendicular sides measure 1.8 cm and 2.4 cm, is inscribed in a circle. What is the circumference of the circle (in cm)?

7375 . A restaurant makes 20% profit after selling a set menu at a discount of 20% . What is the percentage increase of marked price?

7376 . A rectangular tank with dimensions 80 cm X 60 cm X 15 cm can be filled with tap A at the rate of 680 cm every 2 minutes and can be emptied with tap 1 at the rate of 140 cm every minute. It Jamal leaves both taps open at 2:30 pm, when will the tank be filed to 1 /3'' prime its capacity?

7377 . A rectangular plot measuring 90 meters by 50 meters is to be enclosed by wire fencing.If the poles of the fence are kept 5meteres apart,how many poles will be needed?

7378 . A problem is given to three students whose chances of solving it are 1/2, 1/3 and 1/4 respectively. What is the probability that the problem will be solved?

7380 . A number x is divided by 7. When this number is divided by 8, 12 and 16 . It leaves a remainder 3 in each case . The least value of x is?

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