Question

choose right option.

with explanation.

Answer 1

HELLO DEAR,

21 = 7×3

98 = 2×7×7

HENCE ,THE HCF IS 7

THEN,

3m-1 = 7

=> 3m = 8

=> m = 8/3

i think your option is incorrect


I HOPE ITS HELP YOU DEAR,
THANKS

Answer 2

Answer:

d part....................