Question

The prime factorisation of 210 is 

A) 2 × 3 × 3 × 7 

B) 2 × 3 × 5 × 7 

C) 2 × 5 × 5 × 6 

D) 2 × 3 × 7 × 7

Answer 1

Correct option is B) 2 × 3 × 5 × 7

210 = 2 x 3 x 5 x 7

\(\therefore\) Prime factorization of 210  = 2 x 3 x 5 x 7