find the greatest number which on dividing 1661 and 2045 , leaves a reminder of 10 and 13 respectively
explanation : in this type of question , its obvious we need to calculate the hcf , trick is hcf of ( 1661 - 10 ) and ( 2045 - 13 ) = hcf ( 1651 , 2032 ) = 127 option b
gcd(subtract(1661, 10), subtract(2045, 13))