Question

22. What is the smallest number in which we
22
multiply by 392, we get the factors in the
form of cube?
(a) 5
(b) 6
(6 7
(d) 8​

Answer 1

Answer:

Prime factorising 392 , we get, 392 = 2 × 2 × 2 × 7 × 7 = 2 ^3 × 7 ^2 .We know, a perfect cube has multiples of 3 as powers of prime factors.