Question

Which of the following is one of the common factors of 48 and 24?

• A. 5
• B. 4
• C. 16
• D. 11

Answer 1

The correct option is B 4

The factors of:
48 $\to$ 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
24 $\to$ 1, 2, 3, 4, 6, 8, 12, 24
$\therefore$ The common factors are 1, 2, 3, 4, 6, 8, 12 and 24
Hence from the above options, only 4 is the common factor of both 24 and 48.