Question

If a, b, c, d are distinct prime numbers with an as smallest prime then a * b * c * d is a ___________

(a) Odd number

(b) Even number

(c) Prime number

(d) None of the mentioned

I had been asked this question in a job interview.

My question is from Number Theory topic in division Number Theory and Cryptography of Discrete Mathematics

Answer 1

Correct answer is (b) Even number

To explain: Since a is 2, 2 * b * c * d = Even number.