Question

Choose one of the common factors of 9 and 14 from the given options.

• A. 1
• B. 3
• C. 9
• D. 11

Answer 1

The correct option is A 1

Factors of 9 =
1 x 9 , 3 x 3 , 9 x 1
So all the factors of 9 = 1, 3 , 9
similarly factors of 14=
1 x 14, 2 x 7 , 7 x 2 , 14 x 1
So all the factors of 14 = 1, 2, 7 , 14
In all of the factors only 1 is the common factor of 9 and 14