Number of positive integers x for which f(x)=x^3-8x^2+20x-13 is a prime number is

JEE Main Mathematics question

Number of positive integers for which is a prime number is

Answer: 3

, so ; for a prime value one factor must equal (and the other be prime), since for

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-013807