Number System MCQ

This is a mock exam for quantitative aptitude. It comprises questions on the number systems that are similar to the ones asked in the real examinations. These questions are taken from previous real question papers. Ideal for campus selection preparation, MBA examination, Bank PO, UPSC, and other competitive examinations.

Quantitative Aptitude - Number System

The test consists of 13 questions on Number System.

No negative marking for this test.

No Time limit

The pass percentage is 70%

The correct answer with a description will be displayed after the answer has been marked.

Submit the test to calculate your score once you are done with all the questions.

Complexity Level- Moderate

Q1.What is the sum of all the prime numbers from 1 to 20

76

77

79

78

Q2: A prime number is ____

Select the correct definition:

A number that is not exactly divisible by 2

A number exactly divisible by 3

A number divisible by the number itself and 1

None of the above

Q3. A prime number N, in the range 10 to 50, remains unchanged when its digits are reversed. The square of such a number is

484

1089

1936

121

Q4: What is the remainder obtained when any prime number greater than 6 is divided by 6

either 1 or 2

either 1 or 3

either 1 or 5

either 3 or 5

Q5: Which of the following is NOT a prime number?

21

23

29

43

Q6: Find the numbers between 60 and 70 that exactly divides the number (2⁴⁸ - 1)

63 and 67

65 and 67

63 and 65

61 and 65

Q7: Find the value of a, when it is given that a and b are two positive integers such that a² - b² =19

9

20

19

10

Q8: How do you determine that a number is divisible by 11?

The sum of the last 3 digits of the number should be divisible by 11

The number should have 1 at its unit's and ten's place

The given number should be divisible by 3 and 5 both

If the difference between the sum of the digits at odd places and the sum of the digits at even places is either 0 or divisible by 11, then the given number is divisible by 11.

Q9: Select the correct definition for an irrational number

An irrational number can be expressed in the form of p/q where p and q are integers and q not equal to zero.

An irrational number cannot be expressed in a fractional form i.e. the part after decimal is non-terminating

A number beyond 10 crore

None of the above

Q10: Which of the following is true for a rational number ?

A rational number cannot be expressed in a fractional form i.e. the part after decimal is non-terminating

A rational number can be expressed in the form of p/q where p and q are integers and q not equal to zero.

Any positive integer is a rational number

None of the above

Q11: Select the digit that occupies the unit's place of the number 123⁹⁹

4

1

7

8

Q12: Find the value of m, when 2^m - 2ⁿ = 960, where m and n are natural numbers

15

10

12

Cannot be determined

Q13: How do you determine that a given number is divisible by 5 ?

The last two digits of the number must be 25

The sum of last two digits must be 25

The digits at odd places must be 5

The digit at unit's place is either 0 or 5

Quantitative Aptitude Test - Number system MCQ -1

Quantitative Aptitude Test - Number system MCQ -2

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Number System MCQ