find the greatest number which on dividing 3815 and 4521 , leaves a reminder of 31 and 33 respectively
"explanation : in this type of question , its obvious we need to calculate the hcf , trick is hcf of ( 3815 - 31 ) and ( 4521 - 33 ) = hcf ( 3784 , 4488 ) = 88 option a"
gcd(subtract(3815, 31), subtract(4521, 33))