The HCF of 408 and 1309 is:

Correct option is C

Given:

Number given are 408 and 1309

Formula Used:

The greatest number that divides the number is called HCF

Prime factorisation

Solution:

Prime factorisation of number are:

​$$408 = 2^3 \times 3 \times 17$$​​

​$$1309 = 7\times 11 \times 17$$​​

For HCF we includes only the common factors

HCF = 17