Question

if 56*11=9, 37*13=6 and 42*12=3 then find the value of 87*77

Answer 1

Answer is 1 .


Explanation :

• 56*11

= > ( 5 - 1 ) + ( 6 - 1 )
= > 4 + 5
= > 9


• 37*13

= > ( 3 - 1 ) + ( 7 - 3 )
= > 2 + 4
= > 6


• 42*12

= > ( 4 - 1 ) + ( 2 - 2 )
= >3 + 0
= > 3



Similarly,

87*77

= > ( 8 - 7 ) + ( 7 - 7 )
= > 1 + 0
= > 1



$\boxed{ \boxed{ \textbf{ \underline{Therefore, value of 87*77 is 1}}}}$