301 . In a group of people solicited by a charity, 30% contributed TK. 40 each, 45% contributed TK. 20 each and the rest contributed TK. 12 each. What percentage of the total amount came from people who gave TK. 40 each ?

A. 25%
B. 30%
C. 40%
D. 45%
E. 50%

View Answer	Favorite Question

Answer: Option E

Explanation:

Let, total participant = 100

30% contributed = 40×30% = 40×30/100 = 12 Tk.

45% contributed = 20 × 45 % = 20×45/100 = 9 Tk.

Test = { 100 - ( 30 + 45) }% = 25% contributed = 12×25/100 = 3 Tk.

The percentage of total amount came from people who gave Tk 40 each = 12 /( 12 + 9 + 3) ×100 = 50%

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।

সাবস্ক্রিপশন লিংক

302 . In a production lot 40% toys are red and the remaining are green. Half of the toys are small and half are large. 10% of the toys are red and small and 30 toys are green and large. How many toys are red and large?

A. 30
B. 25
C. 60
D. 45
E. None of them

View Answer	Favorite Question

Answer: Option D

Explanation:

303 . In a room of 36 people. 20 players play chase while 28 players play poker. How many players play both?

A. 45
B. 20
C. 12
D. 28

View Answer	Favorite Question

Answer: Option C

Explanation:

আমরা জানি,
Total = n(A) + n(B) - both + none
⇒ 36 = 20 + 28 - both + 0
⇒ 36 = 48 - both
⇒ both = 48 - 36
⇒ both = 12

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

A. 3
B. 6
C. 9
D. 24
E. None of them

View Answer	Favorite Question

Answer: Option A

Explanation:

x + y/2 + (y + z)/2 + (z + x)/2 = 2 + 3 + 4
x + y + z = 9
avg = (x + y + z)/3 = 3

Bangladesh Bank - Assistant Director - 2012

A. 2000
B. 2500
C. 1000
D. 1250
E. None of these

View Answer	Favorite Question

Answer: Option B

Explanation:

306 . In a survey of the people in Dhaka, it was found that 65% of the people survyed watched the news on televison, 40% read a newspaperand 25% read a newspaper and watched the news on television. What percent of the people survyed nither watched the news on television nor read a newspaper?

A. 0%
B. 5%
C. 10%
D. 15%
E. 20%

View Answer	Favorite Question

Answer: Option E

Explanation:

Watched the news on television Only = 65 - 25 = 40%

read a newspaper only = 40 - 25 = 15%

Total = 25 + 15 + 40 = 80%

neither watched the news or neither television nor read a newspaper = (100 - 80)% = 20%

307 . In an election a candidate who gets 84% of the votes is elected by a majority of 476 votes. What is the total number of votes polled ?

A. 672
B. 700
C. 749
D. 848
E. None of them

View Answer	Favorite Question

Answer: Option B

Explanation:

GIVEN: A candidate who gets 84% of the votes is elected by a majority of 476 votes.
Let the total number of votes polled be 'x'
Number of votes in favour of the candidate is = 84% of x
= 84x/100
Number of votes got by the losing candidate = x−84x/100
= (100x - 84x)/100 = 16x/100
Number of extra votes in favor of winning candidate = 84x/100−16x/100
476 = 68x/100
x = (476 × 100 )/ 68
x = 7 × 100
x = 700
Hence,the total number of votes polled are 700 .

Bangladesh Bank - Assistant Director - 2012

A. 28
B. 33
C. 35
D. 25

View Answer	Favorite Question

Answer: Option B

Explanation:

Let the number of correct answers be X.

Total number of questions answered = 75% of 60 = 45

Now, X - (45 - X)×0.25 = 30

or, X - 45×0.25 + 0.25X = 30

or, 1.25X = 30 + 0.45×25 = 30 + 11.25 = 41.25

or, X = 41.25/1.25 = 33

309 . In an examination there were 2000 candidates out of which 900 candidates were boys and rest were girls. If 32% of the boys and 38% of the girls passed. Then the total percentage of pailed candidates is--

A. 86.5%
B. 70%
C. 35.3%
D. 64.7%
E. None of them

View Answer	Favorite Question

Answer: Option D

Explanation:

310 . In covering a certain distance , the speeds of A and B are in the ratio of 3 : 4. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is :

A. 1.0 hour
B. 1.5 hours
C. 2.0 hours
D. 2.5 hours

View Answer	Favorite Question

Answer: Option C

Explanation:

Ratio of speed = 3:4 Ratio of time = 4:3 let A takes 4x hrs,B takes 3x hrs then 4x - 3x = 30/60 hr x = ½ hr Time taken by A to reach the destination is 4x = 4 * ½ = 2 hr

Sonali &amp-Janata Bank | Officer (IT)| 04.01.2019

A. 20
B. 21
C. 12
D. 6

View Answer	Favorite Question

Answer: Option A

Explanation:

312 . In how many ways can the letters of the word 'ARRANGE' be arranged in which the two Rs and two As come together ?

A. 360
B. 120
C. 95
D. 75
E. 150

View Answer	Favorite Question

Answer: Option B

Explanation:

Bangladesh Bank - Assistant Director - 2011

A. 12
B. 8
C. 6
D. 24
E. 4

View Answer	Favorite Question

Answer: Option A

Explanation:

314 . In Sajib’s collection, Bangladeshi stamp is 3 times more than the stamps of other countries. Which of the following cannot be the number of stamps in Sajib’s collection

A. 96
B. 72
C. 54
D. 32

View Answer	Favorite Question

Answer: Option D

Explanation:

Stamps must be in an integer.

Let's say, he has x stamps of other countries

So, he has 3x Stamps of Bangladesh

So it has to be, x+3x=54 [In total]

But if we solve the equation, we can see that x=27/2, which is a fraction [not an integer]

So 54 cannot be the number of stamps. (ans)

315 . In the excel manufacturing Company, 46 percent of the employee are men. If 60 percent of the employee are unionized and 70 percent of them are men, what percent of the non-unionized workers are women?

A. 90%
B. 87.5%
C. 66.7%
D. 50%
E. None of these

View Answer	Favorite Question

Answer: Option E

Explanation:

Lets say there are total 100 employees

Then men = 46 & women = 54

Unionized Emp = 60 & non unionized emp = 40

Men Unionized = .7 * 60 = 42

Women Unionized = 18

Women non - unionized = 54 - 18 = 36

Percentage of Women non unionized = 36/40 * 100 = 90%

ans: 90%

301 . In a group of people solicited by a charity, 30% contributed TK. 40 each, 45% contributed TK. 20 each and the rest contributed TK. 12 each. What percentage of the total amount came from people who gave TK. 40 each ?

302 . In a production lot 40% toys are red and the remaining are green. Half of the toys are small and half are large. 10% of the toys are red and small and 30 toys are green and large. How many toys are red and large?

303 . In a room of 36 people. 20 players play chase while 28 players play poker. How many players play both?

304 . In a set of three numbers, the average of first two numbers is 2. The average of the last two numbers is 3, and the average of the first and the last numbers is 4. What is the average of three numbers ?

306 . In a survey of the people in Dhaka, it was found that 65% of the people survyed watched the news on televison, 40% read a newspaperand 25% read a newspaper and watched the news on television. What percent of the people survyed nither watched the news on television nor read a newspaper?

307 . In an election a candidate who gets 84% of the votes is elected by a majority of 476 votes. What is the total number of votes polled ?

309 . In an examination there were 2000 candidates out of which 900 candidates were boys and rest were girls. If 32% of the boys and 38% of the girls passed. Then the total percentage of pailed candidates is--

310 . In covering a certain distance , the speeds of A and B are in the ratio of 3 : 4. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is :

311 . In how many different ways can 3 identical green shirts and 3 identical red shirts be distributed among 6 children such that each child receives a shirt?

312 . In how many ways can the letters of the word 'ARRANGE' be arranged in which the two Rs and two As come together ?

313 . In how many ways can you arrange the latters A, B, C and D?

314 . In Sajib’s collection, Bangladeshi stamp is 3 times more than the stamps of other countries. Which of the following cannot be the number of stamps in Sajib’s collection

315 . In the excel manufacturing Company, 46 percent of the employee are men. If 60 percent of the employee are unionized and 70 percent of them are men, what percent of the non-unionized workers are women?

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