Question

1.
Find the highest common factor of each of
the following sets of numbers.
(a) 12 and 30
(b) 84 and 156
(c) 15, 60 and 75 (d) 77, 91 and 143

only want c and d​

Answer 1

Step-by-step explanation:

a) 12=2*2*3

30=2*3*5

common are 2&3

HCF=2*3=6

b) 84=2*2*3*7

156=2*2*3*13

common are2, 2&3

HCF=4*3=12

in the same way others will be done