The HCF of 156, 455 and 1183 is:

Correct option is C

Given:

We need to find the Highest Common Factor (HCF) of 156, 455, and 1183 using the factor method.

Factorization:

First, we find the prime factorization of each number:

156 = 2 × 2 × 3 × 13

455 = 5 × 7 × 13

1183 = 13 × 91 = 13 × 7 × 13

Solution:

The common factor among all numbers is 13.

HCF(156, 455, 1183) = 13