2836 . Ralph likes 25 but not 24; he likes 400 but not 300; he likes 144 but not 145.Which does he likw-

A. 10
B. 50
C. 200
D. 1600

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Answer: Option D

Explanation:

Hints': Ralph প্রকৃতপক্ষে যে সংখ্যাগুলোর বর্গ আছে সেই সংখ্যাগুলোর পছন্দ করছে। সংখ্যাগুলে হলো 52 = 25 ; (20)2 = 400 ; (12)2 = 144। সুতরাং উল্লেখিত অপশন গুলোর মধ্যে পছন্দ করে 1600 ; যায় বর্গ (40) 2 = 1600

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2837 . Ram can do a job in 20 days while Sham can do the same job in 25 days. After working for 10 days together, Sham left and Ram finished the job. How many days did Ram take to finish the job?

A. 1
B. 2
C. 5
D. 4

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Answer: Option B

Explanation:

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2838 . Rana makes a 40% profit by selling his home, but loses 12% of the profit to taxes. what is the net percentage of profit Rana makes on the sale?

A. 2.8%
B. 4.8%
C. 25.2%
D. 35.2%
E. None of these

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Answer: Option D

Explanation:

Net operating profit = Operating income × ( 1 - Tax rate) = 40× ( 1 - 12/100) % = 35.2 %

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2839 . Rashed's average on 4 tests is 80. Assuming he can earn no more than 100 on any test, what is the least he can earn on his 5th test and still have a chance for an average of 85 after seven tests ?

A. 60
B. 70
C. 75
D. 85
E. None of these

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Answer: Option C

Explanation:

Total score for first 4 tests:
Average score (80) * Number of tests (4) = Total score
Total score = 80 * 4 = 320

Desired average after 7 tests:
Average score (85) * Number of tests (7) = Total desired score after 7 tests
Total desired score = 85 * 7 = 595

Minimum score needed on remaining tests:
Total desired score - Total score from first 4 tests = Score needed on remaining 3 tests
Score needed = 595 - 320 = 275

Minimum score for the 5th test:
Since Rashed can score a maximum of 100 on any test, we need to find the minimum score for the 5th test considering the remaining 2 tests can score a maximum of 100 each.
Score needed on remaining 3 tests - Maximum score possible on remaining 2 tests = Minimum score for 5th test
Minimum score = 275 - (100 + 100) = 275 - 200 = 75

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2840 . Rashed can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Reena require a minute and a half to stuff the same number of envelopes. Working together, how long will it take Rashed and Reena to stuff 300 envelopes?

A. 15 minutes
B. 4 minutes
C. 3 minutes 30 seconds
D. 3 minutes 20 seconds
E. 2 minutes

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Answer: Option B

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2841 . Rashid can do a piece of work in 8 days, which Tipu can finish in 12 days. If they work at it on alternate days with Rashid beginning, in how many days, the work will be finished?

A. 28/3 days
B. 19/2 days
C. 217/24 days
D. 31/3 days
E. None of these

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Answer: Option B

Explanation:

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2842 . Ratio of the father age to the son's age is 4 : 1. The product of their age is 196. Ratio of their ages after 7 years will be:

A. 3 : 1
B. 5 : 2
C. 7 : 2
D. 14 : 5

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Answer: Option B

Explanation:

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2843 . Razia spent 3 hours climbing 6 miles up a hill. She spent 2 hours coming down the hill on a different path which had a length of 8 miles. For Razia's completed climb up and down the hill, what was her average speed in miles per hour?

A. 2.0
B. 2.5
C. 2.8
D. 3.0

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Answer: Option C

Explanation:

Average speed = total distance / total time = (6 + 8) / (3 + 2) = 14/5 = 2.8 miles/hr

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Jamuna Bank Ltd - Probationary Officer - 2009

A. Tk. 9471
B. Tk. 12,628
C. Tk. 18,040
D. Tk. 18,942

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Answer: Option B

Explanation:

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পূবালী ব্যাংক লিমিটেড || সিনিয়র অফিসার (30-09-2023) || 2023

A. 47
B. 44
C. 50
D. 35

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Answer: Option A

Explanation:

Let, The total number of Chocolates be=x , Then,

X-2/3 +1 = X-15/2 ( the friends are same in number)

3x-2x= 45+2 = 47 ans.

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NRBC BANK PO/TAO (16-06-2023) || 2023

A. 3.6
B. 6
C. 18
D. None of these

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Answer: Option B

Explanation:

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2847 . Reza sells 500 shares in a company via a stockbroker who changes a falt Tk. 20 commission rate on all transactions under Tk. 1000. His bank account is credited with Tk. 692 from the sale of the shares. What price were his shares sold at?

A. 109
B. 131
C. 142.4
D. 168.9

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Answer: Option C

Explanation:

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বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ (BEZA) | সহকারী ব্যবস্থাপক | ৩০.১১.২০১৮

A. 7
B. 6
C. 5
D. 4
E. 3

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Answer: Option B

Explanation:

General rule for such kind of problems: to maximize one quantity, minimize the others; to minimize one quantity, maximize the others. The lowest number of pairs we can make from 7 individual socks is 3 pairs and 1 sock from a fourth pair. Hence, the greatest number of pairs of matched socks Robi can have left is 10 - 4 = 6. So the answer is (b) 6.

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2849 . Robin has 4 times as many marbles as Azad has and 5 times as many as Kalam has. If Kalam has more than 40 marbles, what is the least number of marbles Robin could have?

A. 200
B. 205
C. 210
D. 220
E. None of these

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Answer: Option D

Explanation:

let,

azad = a

robin = r

kalam = k

ATQ,

r = 4a = 5k

5k = 4a

k = 4a/5......i

again given k is more than 40

k>40

let k = 41

from equation... i

41 = 4a/5

a = 205/4 which is not integer

accordingly if k = 42, 43

a is not integer

but if k = 44

a = (44*5)/4

= 55

so minimum value of k is 44 for which minimum value of a is integer

r = 4a or r = 5k

r = 4*55 or r = 5*44

r = 220

ans: 220

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2850 . Roman covers 17 kilometer in 5 hours. How much time does he need to cover 10.2 kilometer?

A. 2.5 hrs
B. 3.4 hrs
C. 3.5 hrs
D. 3 hrs

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Answer: Option D

Explanation:

He can cover 17 km in 5 hrs

So, He can cover 10.2 km in 5×10.2/17 hrs = 3 hrs

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2836 . Ralph likes 25 but not 24; he likes 400 but not 300; he likes 144 but not 145.Which does he likw-

2837 . Ram can do a job in 20 days while Sham can do the same job in 25 days. After working for 10 days together, Sham left and Ram finished the job. How many days did Ram take to finish the job?

2838 . Rana makes a 40% profit by selling his home, but loses 12% of the profit to taxes. what is the net percentage of profit Rana makes on the sale?

2839 . Rashed's average on 4 tests is 80. Assuming he can earn no more than 100 on any test, what is the least he can earn on his 5th test and still have a chance for an average of 85 after seven tests ?

2840 . Rashed can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Reena require a minute and a half to stuff the same number of envelopes. Working together, how long will it take Rashed and Reena to stuff 300 envelopes?

2841 . Rashid can do a piece of work in 8 days, which Tipu can finish in 12 days. If they work at it on alternate days with Rashid beginning, in how many days, the work will be finished?

2842 . Ratio of the father age to the son's age is 4 : 1. The product of their age is 196. Ratio of their ages after 7 years will be:

2843 . Razia spent 3 hours climbing 6 miles up a hill. She spent 2 hours coming down the hill on a different path which had a length of 8 miles. For Razia's completed climb up and down the hill, what was her average speed in miles per hour?

2844 . Reena and Shaloo are partners in a business, Reena invest Tk. 35,000 for 8 months and Shallo invest Tk. 42,000 for 10 months. Out of a profit of Tk. 31,570, Reena's share is:

2845 . Reena bought some chocolates to distribute to her friends. If she gives 3 chocolates to each friend, one friend will get only 2 chocolates. Also, if she gives 2 chocolates to each friend, she will be left with 15 chocolates. How many chocolates did she buy?

2846 . Reena took a loan of Tk. 1200 with simple interest for as many years as the rate of interest. If she paid Tk. 432 as interest at the end of the loan period, what was the rate of interest?

2847 . Reza sells 500 shares in a company via a stockbroker who changes a falt Tk. 20 commission rate on all transactions under Tk. 1000. His bank account is credited with Tk. 692 from the sale of the shares. What price were his shares sold at?

2848 . Robi has 10 pairs of matched socks. If he loses 7 individual socks, what is the greatest number of pairs of matched socks he can have left?

2849 . Robin has 4 times as many marbles as Azad has and 5 times as many as Kalam has. If Kalam has more than 40 marbles, what is the least number of marbles Robin could have?

2850 . Roman covers 17 kilometer in 5 hours. How much time does he need to cover 10.2 kilometer?

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