Question

Find the factors of 84 among the following.

• A. 23
• B. 21
• C. 12
• D. 18

Answer 1

Answer: (B), (C)

The correct options are
B

21

C

12

We can write 84 as,

$84=1\times 84$
$84=2\times 42$
$84=3\times 28$
$84=4\times 21$
$84=6\times 14$
$84=7\times 12$

Thus, all the factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42 and 84.
Therefore, the factors of 84 among the given options are 21 and 12.