38
Question What is the smallest number whose prime factorization has:
(i) Three different prime numbers?
(ii) Four different prime numbers?
(i) The smallest number whose prime factorization has three different prime numbers is 2 × 3 × 5 = 30.
(ii) The smallest number whose prime factorization has four different prime numbers is 2 × 3 × 5 × 7 = 210.
5.4 Prime Factorisation Figure it Out (Page No. 122)