2446 . In a graph there are two curves, $y_{1} = - x_{2} + 10$ $y_{2}$ will be greater than $y_{1}$ when___

A. $x > 5$
B. $x < 5$
C. $- 1$
D. $x < 9$

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Answer: Option B

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Sonali &- Janata Bank Ltd. Senior Officer (IT/ICT) 08.06.2018

A. Tk. 50
B. Tk. 54
C. Tk. 60
D. Tk. 62

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Answer: Option B

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বাংলাদেশ ব্যাংক || অফিসার (ক্যাশ) (21-07-2023)

B. 3
C. 4
D. 5

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Answer: Option B

Explanation:

( 7 - x) + x + ( 8 - x) + 3 = 15

18 - x = 15

x = 18 - 15

x = 3

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2449 . In a group of 15 , 7 have studied Latin , 8 have studied Greek, and 3 have not studied either . How many of these studied both Latin and Greek ?

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

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Answer: Option B

Explanation:

( 7 - x) + x + ( 8 - x) + 3 = 15

18 - x = 15

x = 18 - 15

x = 3.

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Bangladesh Bank - Assistant Director - 2009

A. 3
C. 4
D. 6
E. None of these

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Answer: Option A

Explanation:

The number of students studying Latin or French n(LUF) = 15 - 3 = 12

Now, n(LUF) = n(L) + n(F) - n(LꓵF)

or, n(LꓵF) = n(L) + n(F) - n(LUF) = 7 + 8 - 12 = 3

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2451 . In a group of 15 high school students, 7 study Latin, 8 study French and 3 study nither Latin nor French. How many students study both Latin and French?

A. 3
C. 15
D. 4

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Answer: Option A

Explanation:

The number of students studying Latin or French n(LUF) = 15 - 3 = 12

Now, n(LUF) = n(L) + n(F) - n(LꓵF)

or, n(LꓵF) = n(L) + n(F) - n(LUF) = 7 + 8 - 12 = 3

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2452 . In a group of 52 persons , 16 drink tea but not coffee and 33 drink tea. How many drink coffee but not tea?

A. 3
B. 7
C. 19
D. 17

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Answer: Option C

Explanation:

Total persons = 52

Tea but not coffee = 16 and tea = 33

∴Both tea and coffee = 33 - 16 = 17

∴Coffee but not tea = 52 - (16 - 17) = 19

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2453 . In a group of 60 people, 27 like coke and 42 like borhani and each person likes at least one of the two drinks How many people like both coke and borhani?

A. 9
B. 129
C. 69
D. 15

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Answer: Option A

Explanation:

Total= coke + pepsi - both

বা, 60= 27+42 - both

বা, 60= 69- both

বা, both= 69-60= 9

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Sonali &amp- Janata Bank Ltd. Senior Officer (IT/ICT) 08.06.2018

A. 7
B. 9
C. 11
D. 13

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Answer: Option B

Explanation:

যেহেতু সবাই দুইটির যেকোনো একটি পছন্দ করে সেহেতু

T = n(c) + n(p) - n(B) + None

60 = 27 + 42 - n(B) + 0

n(B) = 69 - 60

n(B) = 9

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2455 . In a group of 60 probationary officers, 40% of them were promoted, 12 of them were terminated and rest to them were placed on probation for the second time. What percent of the probationary officers were placed on probation for the second time ?

A. 60
B. 50
C. 40
D. 30

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Answer: Option C

Explanation:

Promoted = 60 × (2/5) = 24
Terminated = 12
Remain = 60 - 36 = 24
Percentage = 24 × 100/60 = 24 × (5/3) = 40%[Answer]

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Bangladesh Bank - Assistant Director - 2001

A. 12
B. 10
C. 8
D. 6

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Answer: Option A

Explanation:

Let the number of buffaloes be x and the number of ducks be y.

Each buffalo has 1 head & 4 legs.

Each duck has 1 head & 2 legs.

So the number of heads =x+y and the number of legs=4x+2y.

So, by the given condition,

4x+2y=2(x+y)+24

⇒4x−2x+2y−2y=24

⇒2x=24

⇒x=12

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বাংলাদেশ ব্যাংক অফিসার ০২ -১২-২০২২

A. 5 feet
B. 5 feet 1 inches
C. 5 feet 2 inches
D. 5 feet 3 inches

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Answer: Option C

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2458 . In a group of students, 80% of the students weigh less than 60 kg and a total of 32 student weigh less than 50 kg. If 60% of the students weigh at least 50 kg, how many of the students weigh at least 50 kg but less than 60 kg?

A. 32
B. 36
C. 40
D. None of these

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Answer: Option A

Explanation:

Hints:

60 kg এর চেয়ে কম কিন্তু 50kg বা তার চাইতে বেশি ওজনের ছাত্রছাত্রী সং খ্য = (64 - 32) = 32 জন

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2459 . In a horticulture experiment , 200 seeds were planted in plot I and 300 were planted in plot II. 57 percent of the seeds in plot I germinated and 42 percent of the seeds in plot II germinated, what percent of total numbers of planted seeds was germinated?

A. 45.5%
B. 46.5%
C. 48.0%
D. 49.5%
E. None of them

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Answer: Option C

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2460 . In a hostel mess there are food supplies for 40 boys to last 30 days. After 9 days, some boys left the hostel. The food supplies ran out after 44 days from the beginning. How many boys left the hostel? (একটি হোস্টেল মেসে ৪০ জন বালকের জন্য ৩০ দিনের খাবার সরবরাহ করা হয়। ৯ দিন পর, কিছু বালক হোস্টেল ছেড়ে চলে যায়। সরবরাহকৃত খাদ্য শুরু থেকে ৪৪ দিনে শেষ হয়ে যায়। কত জন বালক হোস্টেল ছেড়ে চলে গিয়েছিল?)

A. 6
B. 16
C. 24
D. 14

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Answer: Option B

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Dutch Bangla Bank || Sales Manager (18-09-2024) || 2024

2447 . In a group of 135 persons, 50% people contributed tk. 40 each, 30% contributed Tk. 60 each and the remaining persons contributed Tk. 80. Find the average contribution for the group.

2448 . In a group of 15, 7 have studied Latin, 8 have studied Greek and 3 have not studied either. How many of these studied both Latin and Greek?

2449 . In a group of 15 , 7 have studied Latin , 8 have studied Greek, and 3 have not studied either . How many of these studied both Latin and Greek ?

2450 . In a group of 15 high school students, 7 study Latin, 8 study French and 3 study neither Latin nor French. How many students study both Latin and French?

2451 . In a group of 15 high school students, 7 study Latin, 8 study French and 3 study nither Latin nor French. How many students study both Latin and French?

2452 . In a group of 52 persons , 16 drink tea but not coffee and 33 drink tea. How many drink coffee but not tea?

2453 . In a group of 60 people, 27 like coke and 42 like borhani and each person likes at least one of the two drinks How many people like both coke and borhani?

2454 . In a group of 60 people like Coca cola and 42 people like Pepsi Cola. Each person likes at least one of the two drinks. How many of these people like both Coca Cola and Pepsi Cola ?

2455 . In a group of 60 probationary officers, 40% of them were promoted, 12 of them were terminated and rest to them were placed on probation for the second time. What percent of the probationary officers were placed on probation for the second time ?

2456 . In a group of buffaloes and ducks, the number of legs is 24 more than twice the number of heads. What is the number of buffaloes?

2457 . In a group of four people the height of the group members are 5 feet 4 inches, 5 feet, 5 feet 6 inches and 4 feet 10 inches. The average height of the group members is:

2458 . In a group of students, 80% of the students weigh less than 60 kg and a total of 32 student weigh less than 50 kg. If 60% of the students weigh at least 50 kg, how many of the students weigh at least 50 kg but less than 60 kg?

2459 . In a horticulture experiment , 200 seeds were planted in plot I and 300 were planted in plot II. 57 percent of the seeds in plot I germinated and 42 percent of the seeds in plot II germinated, what percent of total numbers of planted seeds was germinated?

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