Which of the following numbers are prime?
(a) 23   (b) 51   (c) 37   (d) 26

Solution:

We will be using the concepts of prime numbers to solve this.

(a) 23 is a prime number [23 can be expressed as 23 = 1 x 23]
(b) 51 is not a prime number [51 can be expressed as 51 = 1 x 3 x 17]
(c) 37 is a prime number [37 can be expressed as 37 = 1 x 37]
(d) 26 is not a prime number [26 can be expressed as 26 = 1 x 2 x 13]

NCERT Solutions for Class 6 Maths Chapter 2 Exercise 3.2 Question 8

Which of the following numbers are prime? (a) 23 (b) 51 (c) 37 (d) 26

Summary:

The numbers 23 and 37 are prime while 26 is not

☛ Related Questions:

• Write Seven Consecutive Composite Numbers Less Than 100 So That There Is No Prime Number Between Them
• Express Each Of The Following Numbers As The Sum Of Three Odd Primes A 21 B 31 C 53 D 61
• Write Five Pairs Of Prime Numbers Less Than 20 Whose Sum Is Divisible By 5 Hint 3 7 10
• Fill In The Blanks A A Number Which Has Only Two Factors Is Called A B A Number Which Has More Than Two Factors Is Called A C 1 Is Neither Nor D The Smallest Prime