676. A number for each figures are given from 1 to 9 . Find out the best method of classification and identify this amongst the four alternative .

A. (1,3,5),(2,6,9),(4,7,8)
B. (2,3,4),(5,6,8),(9,1,7)
C. (1,3,5),(2,6,8),(4,7,9)
D. (3,2,4),(6,5,8),(7,9,1)

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Answer: Option C

Explanation:

(1,3,5) চিত্রগুলো বৃত্ত সম্পর্কিত।
(2,6,8) ,, ত্রিভুজ ,, ।
এবং (4,7,9) ,, চতুর্ভুজ ,, ।

Bangladesh Bank - Assistant Director - 2015

A. 2% loss
B. 4% loss
C. 2% gain
D. 4% gain

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Answer: Option B

Explanation:

ধরি, 1 লিটার দুধের ক্রয়মূল্য 1 টাক

এবং, 1 লিটার দুধের মিশ্রনের বিক্রয়মূল্য 1 টাকা

২৫% লাভে,

1 লিটার মিশ্রনের ক্রয়মূল্য = ( 100/125 × 1) = 4/5 টাকা

মিশ্রণে দুধ ও পানির অনুপাত = 4/5 - 0 : 1 - 4/5 = 4/5 : 1/5

মিশ্রনে পানির শতকরা হার = 1/5 × 100% = 20%

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

A. 6
B. 8
C. 12
D. 15

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Answer: Option C

Explanation:

Note:
Half = One-half = 1/2
One and a half = 1½

Here,
one-half of the distance = 6 X ½ = 3 km | So, remaining distance = (6-3) = 3 km
two-thirds of the total time = 45 X ⅔ = 30 min | remaining time = (45-30) = 15 min

∴ Speed = [∵ 1 hr = 60 min]
= 12 km/hr (Ans:)

Bangladesh Bank - Assistant Director - 2016

A. 50
B. 4
C. 45
D. cannot be calculated

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Answer: Option D

Explanation:

680 . A, B and C are sisters . D is the brother of E . and E is the Daughter of B. How is A related to D ?

A. Sister
B. Cousin
C. Niece
D. Aunt

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Answer: Option D

Explanation:

E is the daughter of B and D is the brother of E. So D is the son of B. Also A is the sister of B so A is the aunt of D.

Bangladesh Bank - Assistant Director - 2016

A. 5(a+4)
B. abcde/5
C. 5(a+b+c+d+e)
D. a+b+c+f
E. None of these

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Answer: Option E

Explanation:

দুর্নীতি দমন কমিশনের সহকারী পরিচালক-১২.০৪.২০১৩

A. a+b+c
B. ab+c
C. ac+e
D. ac+d

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Answer: Option A

Explanation:

ধরি, a = 1, b = 2, c = 3, d = 4 এবং e = 5
.: a + b + c = 1 + 2 + 3 = 6 (জোড়)
.: ab + c = 1 x 2 + 3 = 5 (বিজোড়)
.:. ac + e = 1 x 3 + 5 = 8 (জোড়)
.:. ac + d = 1 x 3 + 4 = 7 (বিজোড়)
.:. বিজোড় হবে না a + b + c এবং ac + e

ওয়েজ আর্নার্স কল্যাণ বোর্ড || সহকারী পরিচালক (22-11-2024) || 2024

A. B
B. A
C. C
D. D

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Answer: Option C

Explanation:

সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (10-11-2023)

A. 1/24 days
B. 7/24 days
C. 24/7 days
D. 4 days

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Answer: Option C

Explanation:

সমন্বিত ৫ ব্যাংক || অফিসার (ক্যাশ) (11-03-2022)

A. Tk. 200
B. Tk. 150
C. Tk. 100
D. Tk. 300

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Answer: Option B

Explanation:

ধরি, মোট বিনিয়োগ x টাকা

A বিনিয়োগ করে x/3 টাকা

B + C = ( x - x/3) = 2x/3

কিন্তু, B এর বিনিয়োগ পরিমান A ও C এর মোট বিনিয়োগের সমান।

x/3 + C + C = 2x/3

2C = 2x/3 - x/3

2C = x/3

C = x/6 এবং B = 2x/3 - x/6 = 3x/6 = x/2

A : B : C = x/3 : x/2 : x/6 = 2 : 3 : 1

C এর লাভের পরিমাণ ( 900 এর 1/3 + 2 + 1) = (900 এর 1/6) = 150 টাকা

686 . A, B and C enter into partnership with investments in the ratio of 5 : 7 : 8. If at the end of the year A's share of profit is Tk.42360, ow much is the total profit?

A. Tk.169440
B. Tk.183000
C. Tk.196700
D. Tk.168440

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Answer: Option A

Explanation:

A's profit = 42,360 = 5x

therefore x = 42,360/5 = 8472

total profit = 5x + 7x + 8x = 20x = 20*8472

total profit = 1,69,440 tk.

687 . a, b and c positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could he the value of c?

A. 21
B. 30
C. 45
D. 331

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Answer: Option B

Explanation:

688 . A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they gain meet at the starting point altogether?

A. 26 minutes and 18 seconds
B. 42 minutes and 36 seconds
C. 45 minutes and 38 seconds
D. 46 minutes and 12 seconds
E. None of these

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Answer: Option D

Explanation:

উত্তর ইউপোপের দেশ ফিনল্যান্ডের রাজধানী হেলসিংকি। এর মুদ্রার নাম ইউরো। জেনেভা সুইজারল্যান্ডের বিখ্যাত শহর। হেগ হলো নেদারল্যান্ডসের প্রশাসনিক রাজধানী এবং বার্লিন জার্মানির রাজধানী।

689 . A, B and C started a job which they can complete in 2 days. B can do the job in 5 days and C can do it in 4 days. After working for 1 day, both B and C left. How long would it take A to complete the rest of the job?

A. 20 days
B. 30 days
C. 4 days
D. 10 days

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Answer: Option D

Explanation:

690 . A, B C center into partnership with investments in the ratio of 5:7:8. If at the end of the year A's share of profit is Tk. 42360, how much is the total profilt?

A. Tk. 169,440
B. Tk. 183,000
C. Tk. 196,700
D. Tk. 168,440

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Answer: Option A

Explanation:

মনে করি, A, B, C এর বিনিয়োগের পরিমাণ যথাক্রমে

5x, 7x, 8x

বিনিয়োগগুলোর যোগফল = 5x + 7x + 8x = 20x

A এর 5x অংশের মুনাফা হয় 42360 টাকা

সম্পূর্ণ 20x অংশের মুনাফা হয় ( 42360 × 20x) /5x = 169440 টাকা

677 . A person buys certain number of marbles at 20 per taka and an equal number at 30 per taka. He mixes them and sells them at 25 per taka. His gain or loss in the transaction is-

678 . A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time , his speed (in km/hr ) must be :

679 . A's marks in Biology are 20 less than 25% of the total marks obtained by him in Biology, Math and Drawing. If his marks in Drawing be 50, what are his marks in Math?

680 . A, B and C are sisters . D is the brother of E . and E is the Daughter of B. How is A related to D ?

681 . a, b, c, d, e, f are five consecutive odd numbers, their average is-

682 . a, b, c, d and e are five consecutive integers in increasing order of size. Which one of the following expression is not odd?

683 . A, B, C, D and E are five consecutive numbers in increasing order of size. Deleting one of the five numbers from the set decreased the sum of the remaining numbers in the set by 20%. Which one of the following numbers was deleted?

684 . A, B and C can complete a pice of work in 24, 6 and 12 days respectively. Working together, they will be complete the same work in:

685 . A, B and C enter into a partnership. A contributes one-third of the capital while B contributes as much as A and C together contribute. If the profit at the end of the year amounts to Tk. 900, What would C receive?

686 . A, B and C enter into partnership with investments in the ratio of 5 : 7 : 8. If at the end of the year A's share of profit is Tk.42360, ow much is the total profit?

687 . a, b and c positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could he the value of c?

688 . A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they gain meet at the starting point altogether?

689 . A, B and C started a job which they can complete in 2 days. B can do the job in 5 days and C can do it in 4 days. After working for 1 day, both B and C left. How long would it take A to complete the rest of the job?

690 . A, B C center into partnership with investments in the ratio of 5:7:8. If at the end of the year A's share of profit is Tk. 42360, how much is the total profilt?

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