Question

Find the biggest number divides 4 7,77 and 89 leaving the remainder 5 in each case

Answer 1

$47 - 5 = 42 \\ 77 - 5 = 72 \\ 89 - 5 = 84$
now take HCF of these numbers
$42 = 2 \times 3 \times 7 \\ 72 = 2 \times 2 \times 2 \times 3 \times 3 \\ 84 = 2 \times 2 \times 7 \times 3$
HCF(42,72,84)= 2 X 3=6 ANS
that number is 6.

Answer 2

Answer:

answer =6 hope it would help you all