Question

32. Which of the following numbers are coprime numbers ? 1) 21, 22 2) 75, 28 3) 4,9

Detail answer ​

Answer 1

Answer:

The coprime numbers are 21 and 22.

Step-by-step explanation:

The consecutive numbers are always coprime numbers.

eg: 14,15 ; 32;33 ; etc.

21 and 22 are also consecutive number. That is why, they are coprime numbers.

Answer 2

21 and 22

For 21 and 22:

• The factors of 21 are 1, 3, 7, and 21.

• The factors of 22 are 1, 2, 11, and 22.

Here 21 and 22 have only one common factor that is 1. Hence, their HCF is 1 and are co-prime.