Question

(1) 4 and 9 are factors of a number. Which of these could be the number? (A) 8 (B) 18 (C) 49 (D) 72​

Answer 1

The answer is D

72

Explanation:

Factors of 72 are 8,9

8=2×2×2

8=4×2

1,2 3,4,6,8,9.........72

Answer 2

(D) 72

Explanation:

A factor is an integer that divides into a whole number without a remainder.

In this case, both 4 and 9 need to be the result of a division of 72 by some number. 4 is a factor of 8, since 8 divided by 2 is 4, but 9 isn't. 9 is a factor of 18, but 4 isn't. Neither 4 nor 9 is a factor of 49. If you divide 72 by 18, you get 4. If you divide 72 by 8, you get 9.

4 and 9 are factors of 72.