Number System MCQ

Number System MCQ

Which of the following is a prime number?
a) 12
b) 17
c) 22
d) 30
Answer: b) 17

Which of the following is a composite number?
a) 11
b) 13
c) 17
d) 21
Answer: d) 21

What is the smallest whole number?
a) 0
b) 1
c) 2
d) -1
Answer: b) 1

Which of the following is an odd number?
a) 10
b) 15
c) 20
d) 24
Answer: b) 15

Which of the following is a multiple of 5?
a) 18
b) 22
c) 25
d) 30
Answer: c) 25

What is the largest prime number less than 10?
a) 5
b) 7
c) 9
d) 11
Answer: b) 7

What is the unit digit of the square of any even number?
a) 0
b) 1
c) 4
d) 6
Answer: c) 4

What is the sum of the first five prime numbers?
a) 10
b) 15
c) 18
d) 28
Answer: d) 28

What is the remainder when 17 is divided by 5?
a) 0
b) 1
c) 2
d) 3
Answer: d) 3

Which of the following is a perfect square?
a) 27
b) 36
c) 45
d) 50
Answer: b) 36

What is the product of any number multiplied by 0?
a) 0
b) 1
c) The number itself
d) The number plus 1
Answer: a) 0

What is the next prime number after 29?
a) 31
b) 32
c) 33
d) 34
Answer: a) 31

What is the largest prime factor of 24?
a) 2
b) 3
c) 4
d) 5
Answer: b) 3

What is the sum of the first five natural numbers?
a) 5
b) 10
c) 15
d) 20
Answer: b) 10

Which of the following is a factor of 48?
a) 7
b) 12
c) 25
d) 36
Answer: b) 12

What is the smallest multiple of 9?
a) 18
b) 27
c) 36
d) 45
Answer: b) 27

What is the square root of 144?
a) 10
b) 12
c) 14
d) 16
Answer: b) 12

What is the sum of the digits of 325?
a) 10
b) 12
c) 15
d) 20
Answer: c) 10

What is the value of 7² – 5³?
a) -8
b) 8
c) 18
d) 24
Answer: a) -8

What is the remainder when 52 is divided by 6?
a) 0
b) 1
c) 2
d) 4
Answer: c) 2

What is the smallest prime number greater than 20?
a) 23
b) 26
c) 29
d) 31
Answer: a) 23

What is the product of any number multiplied by 1?
a) 0
b) 1
c) The number itself
d) The number plus 1
Answer: c) The number itself

What is the next composite number after 19?
a) 20
b) 21
c) 22
d) 23
Answer: b) 21

What is the value of 4! (factorial of 4)?
a) 6
b) 12
c) 24
d) 48
Answer: c) 24

What is the sum of the first ten natural numbers?
a) 45
b) 50
c) 55
d) 60
Answer: c) 55

What is the largest factor of any number?
a) 0
b) 1
c) The number itself
d) The number plus 1
Answer: c) The number itself

What is the product of any number multiplied by 10?
a) 0
b) 1
c) The number itself
d) The number plus 1
Answer: c) The number itself

What is the value of 2³ × 3²?
a) 18
b) 24
c) 36
d) 54
Answer: b) 24

What is the remainder when 75 is divided by 4?
a) 0
b) 1
c) 2
d) 3
Answer: c) 3

What is the square root of 169?
a) 10
b) 12
c) 13
d) 15
Answer: c) 13