1681 . How many different numbers of two digits can be formed with the digits 1, 2, 3, 4, 5, 6; no digit being repeated?

A. 40
B. 30
C. 35
D. 45

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Answer: Option B

Explanation:

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Janata Bank PLC || Officer (Rural Credit) (27-10-2023) || 2023

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1682 . How many different selections of 4 books can be made from 10 different books , if 2 particular books are never selected?

A. 28
B. 45
C. 70
D. 210

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Answer: Option C

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সোনালী ও ডিবিবিএল ব্যাংক- সিনিয়র অফিসার (আইটি) - 16.10.2020 ||

A. 5
B. 6
C. 7
D. None of these

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Answer: Option B

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Bangladesh Bank - Assistant Director - 2014

A. 5220
B. 7080
C. 6250
D. 6076

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Answer: Option D

Explanation:

নটিক্যাল মাইল নৌপথ ও আকাশ পথের দৈর্ঘ্য নির্ণয়ে ব্যবহৃত পরিমাপের একক।
1 নটিক্যাল মাইল = 1852 মিটার
= 6076.01 ফুট

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সমন্বিত ৪ ব্যাংক - সহকারী প্রোগ্রামার - 25.09.2020

A. 27
B. 29
C. 30
D. 31

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Answer: Option A

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অফিসার (জেনারেল) - 12.11.2021

A. 29
B. 31
C. 32
D. 38

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Answer: Option A

Explanation:

To find the number of integers from 1 to 1000 that are divisible by 30 but not by 16, you can use the following steps:

First, find the number of integers divisible by 30 in the range from 1 to 1000. To do this, divide 1000 by 30:

1000 ÷ 30 = 33.333...

Since we're looking for integers, there are 33 integers divisible by 30 in the range.

Next, find the number of integers divisible by both 30 and 16. To do this, find the least common multiple (LCM) of 30 and 16:

LCM(30, 16) = 240

Now, find the number of integers divisible by 240 in the range from 1 to 1000. To do this, divide 1000 by 240:

1000 ÷ 240 = 4.166...

Since we're looking for integers, there are 4 integers divisible by both 30 and 16 in the range.

Now, subtract the number of integers divisible by both 30 and 16 from the total number of integers divisible by 30:

33 (divisible by 30) - 4 (divisible by both 30 and 16) = 29

So, there are 29 integers from 1 to 1000 that are divisible by 30 but not by 16. The answer is 29.

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Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018

A. 36 kg
B. 42 kg
C. 56 kg
D. 63 kg
E. None of these

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Answer: Option D

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1688 . How many liters of a 90% of concentrated acid needs to be mixed with a 75% Solution of concentrated acid to get a 30 liter Solution of 78% concentrated acid?

A. 8
B. 6
C. 7
D. 9

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Answer: Option B

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1689 . How many liters of fuel are needed for a steamer to sail 2400 kilometers if it uses 40 liters of fuel to sail 320 kilometers?

A. 250
B. 255
C. 260
D. 300
E. None of these

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Answer: Option D

Explanation:

To sail 320 km it uses 40 litera fuel

To, 2400 km it uses ( 40×2400)/320 = 300 liters fuel

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1690 . How many meters is one nautical mile ?

A. 1750.18 meters
B. 1853.18 meters
C. 1650.20 meters
D. 1953 .18 meters

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Answer: Option B

Explanation:

এক নটিক্যাল মাইল = ১.৮৫২ কিলোমিটার
১ কিলোমিটার = ১০০০ মিটার
১.৮৫২ কিলোমিটার = ১.৮৫২ × ১০০০ = ১৮৫২ মিটার

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প্রধান প্রশাসনিক কর্মকর্তার কার্যালয় ( প্রতিরক্ষা মন্ত্রণালয়) সহকারী পরিচালক ০৫.০৪.২০১৯

A. Ten
B. Twenty-five
C. Fifty
D. None of these

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Answer: Option A

Explanation:

১ কোটি হলো ১০০ লাখ এর সমান।

১০ মিলিয়নে ১ কোটি।

১০০ কোটিতে ১ বিলিয়ন।

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Bangladesh Bank - Assistant Director - 2001

A. 60/dm
B. d/m
C. dm/60
D. 60 d/m

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Answer: Option D

Explanation:

m mile can be travelled in 60 minutes

d mile can be travelled in (60 x d)/m minutes = 60d/m minutes.

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1693 . How many numbers from 1 to 200 inclusive are equal to the cube of an integer?

A. 1
B. 2
C. 3
D. 4
E. None of these

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Answer: Option E

Explanation:

1³ = 1

2³ = 8

3³= 27

4³ = 64

5³ = 125

So, there are 5 integers

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1694 . How many numbers from 11 to 50 are there which are exactly divisible by 7 not by 3?

A. 6
B. 5
C. 4
D. 2

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Answer: Option C

Explanation:

Speed of the train = 650/65 = 10 mps.
Speed of the man = 10/6 = 5/3 mps.
Time for the man to cross the platform = 240/(5/3) = 144 seconds = 2 minutes 24 seconds. Ans: D

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সমন্বিত ব্যাংক অফিসার (ক্যাশ) || (02-06-2023)

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

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Answer: Option B

Explanation:

1×540 = 540

2×270 = 540

3×180 = 540

4×135 = 540

5×108 = 540

6×90 = 540

9×60 = 540

10×54 = 540

12×45 = 540

15×36 = 540

18×30 = 540

20×27 = 540

So the odd divisors are 1, 3, 5, 9, 15, 27, 45, 135.

So the number of odd divisors is 8.

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

1681 . How many different numbers of two digits can be formed with the digits 1, 2, 3, 4, 5, 6; no digit being repeated?

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

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1682 . How many different selections of 4 books can be made from 10 different books , if 2 particular books are never selected?

1683 . How many digits will be there to the right of the decimal point in the product of 95.75 and 0.2554?

1684 . How many feet is equal to 1 nautical mile?

1685 . How many integers between I and 100 are divisible by 3 but not by 5?

1686 . how many integers from 1 to 1000 are divisible by 30 bt not 16

1687 . How many kilogram of sugar costing TK. 9 per kg must be mixed with 27 kg of sugar costing TK. 7 per kg so that there may be a again of 10% by selling the mixture at TK. 9.24 per kg?

1688 . How many liters of a 90% of concentrated acid needs to be mixed with a 75% Solution of concentrated acid to get a 30 liter Solution of 78% concentrated acid?

1689 . How many liters of fuel are needed for a steamer to sail 2400 kilometers if it uses 40 liters of fuel to sail 320 kilometers?

1690 . How many meters is one nautical mile ?

1691 . How many millions marks a crore ?

1692 . How many minutes will it take police car to travel a distance of d miles if it travels at m mile per hour?

1693 . How many numbers from 1 to 200 inclusive are equal to the cube of an integer?

1694 . How many numbers from 11 to 50 are there which are exactly divisible by 7 not by 3?

1695 . How many odd, positive divisors does 540 have?

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