2431 . In a class there are 32 females. The ratio of female to male is 16 : 9. What is the percentage of female in that class?

A. 32%
B. 36%
C. 56.25%
D. 64%

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Answer: Option D

Explanation:

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2432 . In a club 50% of the male voters and 80% of the female voters voted for candidate A . If candidate A received 70% of the total votes, what is the ratio of male to female voters?

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

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Answer: Option D

Explanation:

Equation : 25

Male voter = x

Female voter = y

50% of x + 80% of y = 70% of (x + y)

= > 50x/100 + 80y/100 = 70(x + y)/100

= > 50x + 80y = 70x + 70y

= > 80y 70y = 70x 50x

= > 10y = 20x

∴x/y = 10/20 = ½

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Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

A. 18%
B. 24%
C. 29%
D. 30%
E. None of these

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Answer: Option C

Explanation:

Boy's 45%, So, Girls = ( 100 - 45) % = 55%

Boy's went to picnic = 45% of 40% = 18%

Girls went to picnic = 55% of 20% = 11%

Total students went on a picnic = ( 18 + 11) % = 29 %

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2434 . In a college Rahim scored 80 marks out of 150 in History and 95 marks out of 120 in English. If he wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

A. 70
B. 55
C. 76
D. None of these

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Answer: Option D

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Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 1/2
B. 1/4
C. 1/6
D. 1/3

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Answer: Option C

Explanation:

To find the probability that both marbles drawn are green, you can use the concept of probability.

First, let's consider the total number of ways to choose 2 marbles out of 4 (2 green and 2 red). This can be calculated using combinations, denoted as "C," and given by:

Total ways to choose 2 marbles from 4 = C(4, 2)

C(4, 2) = 4! / [2!(4 - 2)!] = (4 * 3) / (2 * 1) = 6

So, there are 6 equally likely ways to choose 2 marbles from the container.

Now, let's calculate the number of ways to choose 2 green marbles out of 2. This is simply 1 way because you can only choose both green marbles in one way.

Therefore, the probability of drawing 2 green marbles is:

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Probability = 1 (favorable outcomes) / 6 (total outcomes)

Probability = 1/6

So, the probability that both marbles drawn are green is 1/6.

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Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

A. 20%
B. 25%
C. 30%
D. 30%
E. None of these

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Answer: Option B

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2437 . In a cricket match, five batsmen A, B, C, D and E scored an average 36 runs. D scored 5 more than E; E scored 8 fewer than A; B scored as many as D and E combined; and B and C jointly scored 107. How many runs did E score?

A. 62
B. 45
C. 28
D. 20
E. None of these

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Answer: Option D

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2438 . In a cricket team scores X runs on average over N games and then scores Y runs in the next game, then the average score for the team over the (N + 1) games is---

A. (X + Y)/(N + 1)
B. (NX + Y)/(N + 1)
C. {N(X + Y)}/(N + 1)
D. {N(X + Y) - 1}/N

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Answer: Option B

Explanation:

The average score for the team over (N+1) games can be calculated as follows:

Total Runs After N Games: The first N games is the average (X) multiplied by the number of games (N). So, total runs after N games = N * X.

Total Runs After (N+1) Games: After the next game, Y runs are added to the previous total. Therefore, total runs after (N+1) games = N * X + Y.

Average Score After (N+1) Games: we divide the total runs after (N+1) games by the number of games (N+1). So, average score = (N * X + Y) / (N + 1).

Therefore, the average score for the team over the (N+1) games is (N * X + Y) / (N + 1).

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2439 . In a cricket tournament 30,000 tickets were sold. One-fourth of the tickets were sold at TK. 30 each, 1/3 were sold at TK. 25 each, and the remaining tickets were sold at TK. 20 each. How many tickets were sold at TK. 20 each ?

A. 10,000
B. 12,000
C. 12,500
D. 13,500

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Answer: Option C

Explanation:

মোট বিক্রিত টিকিটের সংখ্যা 30000 টি

30 টাকা দরে টিকিট বিক্রি হয়েছে (30000 এর 1/4 অংশ) = 7500 টি

25 টাকা দরে টিকিট বিক্রি হয়েছে (30000 এর 1/3 অংশ) = 10000 টি

অতএব 30 টাকা ও 25 টাকা দরে মোট বিক্রিত টিকিটের সংখ্যা = (7500 + 10000) টি

= 17500 টি

অতএব বাকি টিকিটগুলো অর্থাৎ 20 টাকা দরে বিক্রিত টিকিটের সংখ্যা = (30000 - 17500)টি

= 12500 টি

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Bangladesh Bank - Officer - 2001

B. 12
C. 13
D. 20

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Answer: Option D

Explanation:

Now, d = q x 21 = 21q

Again, d = 12 x 35

or, 21q = 420

or, q = 420 / 21

or, q = 20

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তিতাস গ্যাস ট্রান্সমিশন এন্ড ডিষ্ট্রিবিউশন কোম্পানী লি. | সহকারী ব্যবস্থাপক (অ্যাকাউন্টস) | ২৭.০৪.২০১৮

A. Zero
B. 12
C. 13
D. 20
E. None

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Answer: Option D

Explanation:

Now, d = q x 21 = 21q

Again, d = 12 x 35

or, 21q = 420

or, q = 420 / 21

or, q = 20

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Probationary Officer | 31.03.2017 ||

A. 1500
B. 2000
C. 2200
D. 2500

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Answer: Option C

Explanation:

Suppose Total employee =100%

Total Employee = Workers + Executive + Clerks

=> 100% = 58% + 660 + 264

=> 42% = 924

=> 1% = 22

=> 100% = 2200

Ans: 2200

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সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. 1.333
B. 4.333
C. 6
D. 13
E. None of these

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Answer: Option A

Explanation:

All three of the machines together can complete (1/3 + 1/4 + 1/6) = 3/4 part of the job in a day.

Those machines can complete 3/4 part of the job in 1 day.

So, the machines can complete the whole job in 1/(3/4) = 4/3 = 1.333 day.

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2444 . In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons there in the family?

A. 2
B. 3
C. 4
D. 5
E. None of these

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Answer: Option B

Explanation:

3 sons. 1 son has 2 brothers, twice of 2 brothers is 4 sisters, 1 sister has 3 sisters and 3 brothers.

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2445 . In a family, the father took 1/4 of the cake and had 3 times as much as each of the other members had. The total number of family member is-

A. 3
B. 7
C. 10
D. 12

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Answer: Option C

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বাংলাদেশ ব্যাংক অফিসার ০২ -১২-২০২২

2431 . In a class there are 32 females. The ratio of female to male is 16 : 9. What is the percentage of female in that class?

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2432 . In a club 50% of the male voters and 80% of the female voters voted for candidate A . If candidate A received 70% of the total votes, what is the ratio of male to female voters?

2433 . In a college, 45% of the students are boys. If 40% of the boys and 20% of the girls went on a picnic, what percentage of the total students went to the picnic?

2434 . In a college Rahim scored 80 marks out of 150 in History and 95 marks out of 120 in English. If he wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

2435 . In a container , there are 2 green marbles and 2 red marbles. You randomly pick the marbles. what is the probability that both of them are green?

2436 . In a cricket match, a batsman scored 80 runs which included 3 boundaries and 8 sixes . What percent of his total score did he make by running between the wickets ?

2437 . In a cricket match, five batsmen A, B, C, D and E scored an average 36 runs. D scored 5 more than E; E scored 8 fewer than A; B scored as many as D and E combined; and B and C jointly scored 107. How many runs did E score?

2438 . In a cricket team scores X runs on average over N games and then scores Y runs in the next game, then the average score for the team over the (N + 1) games is---

2439 . In a cricket tournament 30,000 tickets were sold. One-fourth of the tickets were sold at TK. 30 each, 1/3 were sold at TK. 25 each, and the remaining tickets were sold at TK. 20 each. How many tickets were sold at TK. 20 each ?

2440 . In a division, the remainder is zero. A student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient?

2441 . In a division sum , the remainder is zero . A student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient ?

2442 . In a factory, there are workers, executives and clerks. 58% of the employees are workers, 660 are executives and the remaining 264 employees are clerks. How many employees are there in the factory?

2443 . In a factory there are 3 machines to perform a job. The newest machine can do the job in 3 days, another machine can do it in 4 days, and the third machine can do it in 6 days. How many days will the factory take to do the job using all three machines together?

2444 . In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons there in the family?

2445 . In a family, the father took 1/4 of the cake and had 3 times as much as each of the other members had. The total number of family member is-

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