Question

solve this 9*8*7= 876, 6*4*2=531, 8*5*3= ?

Answer 1

9*8*7 = 9-1*8-1*7-1 = 876
6*4*2 = 6-1*4-1*2-1 = 531
8*5*3 = 8-1*5-1*3-1 = 742

The required answer is 742.....!!!!!!!

Answer 2

$\textbf{\large{Answer -}}$

The answer is $\textbf{742.}$

Explanation :

Everytime we subtract one from each digit and get the answer.

9*8*7 = 876

==> (9-8)(8-1)(7-1) = 876

6*4*2 = 531

==> (6-1)(4-1)(2-1) = 531

8*5*3 = 742

==> (8-1)(5-1)(3-1)