Question

which of the following numbers is a factor of 49?

choose 1 answer:

a 7

b 2

c 9

d 4

Explanation:

Identify factors of 49

$$ 49 = 1 \times 49 $$

$$ 49 = 7 \times 7 $$

$$ \text{Factors of 49} = \{1, 7, 49\} $$

Test the given options

$$ 49 \div 7 = 7 \quad (\text{Remainder } 0) $$

$$ 49 \div 2 = 24 \quad (\text{Remainder } 1) $$

$$ 49 \div 9 = 5 \quad (\text{Remainder } 4) $$

$$ 49 \div 4 = 12 \quad (\text{Remainder } 1) $$

Answer:

• (A) 7 (Correct answer)
• (B) 2
• (C) 9
• (D) 4