Practice Questions on Number System
Aptitude Questions and Answers

Easy Number System Question - 26

Q26.

The number obtained by interchanging the two digits of a two digit number is less than the original number by 27. If the difference between the two digits of the number is 3, what is the original number?

A.

74

B.

63

C.

85

D.

Cannot be determined

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Easy Number System Question - 27

Q27.

How many 3-digit numbers do not have an even digit or a zero?

A.

60

B.

80

C.

125

D.

150

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Easy Number System Question - 28

Q28.

The number 3072 is divisible by both 6 and 8.

Which one of the following is the first integer larger than 3072 that is also divisible by both 6 and 8?

A.

3084

B.

3086

C.

3090

D.

3096

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Easy Number System Question - 29

Q29.

The remainder when $7^84$ is divided by 342 is

A.

0

B.

1

C.

49

D.

241

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Easy Number System Question - 30

Q30.

The LCM of two number is 4800 and their HCF is 160. If one number is 480, then the second number is:

A.

1200

B.

1500

C.

1600

D.

1800

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