Karan thinks of a two-digit number. Both of its digits are prime digits (chosen from 2, 3, 5, 7) and the number itself is also prime.
Which of the following could be Karan's number?

Question

Karan thinks of a two-digit number. Both of its digits are prime digits (chosen from 2, 3, 5, 7) and the number itself is also prime. Which of the following could be Karan's number?

Accepted Answer

53. Digits 5 and 3 are both prime, and 53 is prime. 25 = 5x5, 27 = 3x9, 57 = 3x19 are composite.

Karan thinks of a two-digit number. Both of its digits are prime digits (chosen from 2, 3, 5, 7) and the number itself is also prime.
Which of the following could be Karan's number?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 6 Prime and Composite Numbers practice