Question

(
Find the HCF of the numbers by prime factorization.
5. (a) 30 and 75
(b) 64 and 80
(c) 36 and 81
6. (a) 45 and 105
(b) 48 and 128
(c) 72 and 126
7.(a) 165 and 275 (b) 120 and 168 (c) 240 and 300
8. (a) 36, 48 and 84 (b) 38,57 and 76
(c) 54,72 and 90
(e) 120 120
(​

Answer 1

Step-by-step explanation:

5.(a) 30=2x3x5

75=3x5x5

HCF=3x5=15

In this type of equations divide the number in the question by prime factors(2,3,5,7,11,13,....)

For Hcf we take the common number between the two number in the question.

U can calculate the remaining using this method