Question

Using the prime factor method, find the H.C.F. of
(i) $5\text{and}8$

Answer 1

(i) Factor of a number: The number by which the given number can be divided completely.
Prime factor of 5 = 5
Prime factors of $8=2\times 2\times 2$
Thus, no common prime factors between 5 and 8.
Hence, H.C.F. of 5 and 8 is 1.