Question

(i) 21
(ii) 32
(iii) 39
(iv) 61
12. Find the numbers between 1 and 100 having exactly three factors.​

Answer 1

Answer:

Those numbers with only two factors, i.e., 1 and the number itself, are known as prime numbers.

Examples: 2, 3, 5, 7, 11 and 13

The prime numbers between 1 and 30 are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.

Answer 2

Answer:

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