Question

There are four prime numbers in ascending order. The product of first three is 385 and that of last three is 1001. What is the last number?

Answer 1

Answer

Prime factorisation of 385 = 5 × 7 × 11

First 3 no.s = 5, 7, 11

Prime factorisation of 1001 = 7 × 11 × 23

Last number = 23