2866 . The next number in the geometric progression 5, 10, 20 is:

A. 45
B. 40
C. 50
D. 25

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Answer: Option B

Explanation:

2867 . The next number in the sequence 3, 4,8,17,33,.....is-

A. 54
B. 56
C. 58
D. 60

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Answer: Option C

Explanation:

To find the next number in the sequence, we can look for a pattern in the differences between consecutive terms:

4 - 3 = 1 8 - 4 = 4 17 - 8 = 9 33 - 17 = 16

We can see that the differences between consecutive terms are perfect squares: 1^2, 2^2, 3^2, and 4^2. This suggests that the pattern might be related to square numbers.

Let's continue this pattern:

The next perfect square after 4^2 (16) is 5^2 (25).

So, to find the next term in the sequence, we add the next square number:

33 + 25 = 58

Therefore, the next number in the sequence is 58.

সমন্বিত ৭ ব্যাংক ও ১টি আর্থিক | সিনিয়র_অফিসার | 27-11-2021

A. 34
B. 36
C. 38
D. 40

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Answer: Option C

Explanation:

3 - 6 = 3

6 - 11 = 5

11 - 18 = 7

18 - 27 = 9

27 - 38 = 11

সুতরাং পরবর্তী সংখ্যাটি 38.

অফিসার (সাধারণ) ২৭.১২. ২০১৯

A. 34
B. 36
C. 38
D. 40

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Answer: Option C

Explanation:

পরের সংখ্যা হতে আগেরটি বিয়োগ করলে পাই,

৬-৩= ৩; ১১-৬=৫; ১৮-১১=৭; ২৭-১৮=৯

অর্থাৎ, প্রথম সংখ্যার সাথে ধারাবাহিক ভাবে odd number যোগ করলে পরের সংখ্যা পাওয়া যায়।

৯ এর পরে odd 11.

পরবর্তী সংখ্যা (২৭+১১)=৩৮

Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018

A. 13
B. 17
C. 23
D. 21

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Answer: Option C

Explanation:

প্রশ্নানুসারে,

3 × b + 2 = a

∴ a = 3b + 2

আবার, 3 × 2 + 1 = b

∴ b = 7

∴ a = 3 × 7 + 2

= 23.

সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 10%
B. 5%
C. 0.5%
D. 0.05%

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Answer: Option C

Explanation:

2872 . The number 89715938* is divisible by 4. The unknown non-zero digit marked as* will be

A. 4
B. 3
C. 2
D. 6

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Answer: Option A

Explanation:

কোন সংখ্যার শেষ দুটি অঙ্ক ( দশক ও একক) দ্বারা গঠিত সংখ্যা 4 দ্বারা বিভাজ্য হলে উক্ত সংখ্যাটি 4 দ্বারা বিভাজ্য হবে। এর স্থানে 4 হলে দশক ও একক স্থানীয় অঙ্ক দ্বারা গঠিত সংখ্যা 84 যা 4 দ্বারা বিভাজ্য।

2873 . The number of boys in a class is three times the number of girls. Which one of the following numbers cannot represent the total number of student in the class?

A. 48
B. 44
C. 42
D. 40
E. None of these

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Answer: Option C

Explanation:

No of girls  =  x
so x  +  3x  =  4x
42 is not divisible by 4

2874 . The number of flights leaving a certain airport doubles during every one-hour period between its 9 am opening and noon; afternoon, the number of flights leaving from the airport doubles during every two-hour period. If 4 flights left from the airport between 9 am and 10 am, how many flights left the airport between 2 pm and 4 pm?

A. 128
B. 32
C. 48
D. 64
E. None of these

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Answer: Option D

Explanation:

9 টা থেকে noon অর্থাৎ 12টা পর্যন্ত flight সংখ্যা double হয় প্রতি 1 ঘণ্টায় । 9 টা থেকে 10 টায় ছুটি flight হলে 10 - 11 টায় 2x, 11  -  12 টায় 4x / Noori - এর পর প্রতি দুই ঘণ্টায় হয় দ্বিগুণ। 12  - 2 টায় ৪r 2টা থেকে 4টায় হয় 16x, তাহলে x  =  4 দেওয়া আছে। সুতরাং ফ্লাইট সংখ্যা  =  16x  =  16   ×  4  =  64

2875 . The number of girls in a class is 5 times the number of boys. Which of the following can not be the total number of children in the class?

A. 24
B. 30
C. 35
D. 126

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Answer: Option C

Explanation:

Hints: এটি Ans দেখে solve করতে হবে boy এর সংখ্যা b এবং girl এর সংখ্যা 5b এখন 5b + b = 6b

এখানে, 35 কে 6 দিয়ে নি:শেষে ভাগ করা যায় না। কাজেই সঠিক উত্তরঃ 35

2876 . The number of marbles in Amin’s collection is 80% of the number in Rahim’s collection. If Rahim has 80 more marbles than Amin, how many marbles do they have altogether?

A. 720
B. 120
C. 135
D. 400

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Answer: Option A

Explanation:

2877 . the number of parallellograms that can be formed from a set of four parallei lines intersecting another set of three parallel lines is

A. 6
B. 9
C. 12
D. 18

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Answer: Option D

Explanation:

To find the number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines, you can use the following method:

Understand the pattern: Each parallelogram can be formed by selecting two vertical lines and two horizontal lines that intersect to create a closed shape.

Count the vertical lines: There are 4 vertical lines in the first set.

Count the horizontal lines: There are 3 horizontal lines in the second set.

Choose two vertical lines: You can choose 2 out of the 4 vertical lines in C(4, 2) ways, where C(n, k) represents the combination of n items taken k at a time.

Choose two horizontal lines: Similarly, you can choose 2 out of the 3 horizontal lines in C(3, 2) ways.

Calculate the total number of parallelograms: To find the total number of parallelograms, multiply the number of ways to choose vertical lines by the number of ways to choose horizontal lines:

Total parallelograms = C(4, 2) * C(3, 2)

Now, calculate:

C(4, 2) = 4! / (2!(4-2)!) = 6

C(3, 2) = 3! / (2!(3-2)!) = 3

Total parallelograms = 6 * 3 = 18

So, the number of parallelograms that can be formed is 18. The answer is indeed 18.

Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018

A. +3%
B. -3%
C. +17%
D. +20%

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Answer: Option C

Explanation:

ব্যাখাঃ Percentage change ( A + B + AB/100)

= { 30 + ( - 10) + 30× ( - 10)/100}%

= + 17%

2879 . The number of passengers on Dhaka-Rangpur route increased by 35% when the fare was reduced by 15%. What will be the percentage increase in revenue?

A. 14.75
B. 19.25
C. 20.50
D. 25

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Answer: Option A

Explanation:

2880 . The number of stamps in Ziko's collection is 75% of the number in Pallab's collection. If Pallab has 80 more stamps than Ziko, how many stamps do they have altogether?

A. 320
B. 240
C. 560
D. 620
E. None of these

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Answer: Option C

Explanation:

let, pallab has = X stamps

ziko has = 0.75X stamps

pallab has x - 0.75x = 0.25x more stamps than than ziko.

apq,

0.25x = 80

x = 320

pallab has = 320 stamps

ziko has = 320x.75 = 240

together they have = 320 + 240 = 560

2866 . The next number in the geometric progression 5, 10, 20 is:

2867 . The next number in the sequence 3, 4,8,17,33,.....is-

2868 . The Next Number in the sequence 3,6,11,18 ,27, .... is -

2869 . the next number in the sequence 3,6 ,11,18,27....

2870 . The number 3 divides 'a' with a result of 'b' and a reminder of 2. The number 3 divides 'b' with a result of 2 and 'a' reminder of 1. What is the value of 'a'?

2871 . The number 50 is what percentage of 10000?

2872 . The number 89715938* is divisible by 4. The unknown non-zero digit marked as* will be

2873 . The number of boys in a class is three times the number of girls. Which one of the following numbers cannot represent the total number of student in the class?

2875 . The number of girls in a class is 5 times the number of boys. Which of the following can not be the total number of children in the class?

2876 . The number of marbles in Amin’s collection is 80% of the number in Rahim’s collection. If Rahim has 80 more marbles than Amin, how many marbles do they have altogether?

2877 . the number of parallellograms that can be formed from a set of four parallei lines intersecting another set of three parallel lines is

2878 . The number of passengers on Dhaka-Rangpur route increased by 30% when the fare was reduced by 10%. What will be the percentage change in revenue?

2879 . The number of passengers on Dhaka-Rangpur route increased by 35% when the fare was reduced by 15%. What will be the percentage increase in revenue?

2880 . The number of stamps in Ziko's collection is 75% of the number in Pallab's collection. If Pallab has 80 more stamps than Ziko, how many stamps do they have altogether?

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