the greatest number which on dividing 1557 and 2037 leaves remainders 7 and 5 respectively , is :
"explanation : required number = h . c . f . of ( 1557 - 7 ) and ( 2037 - 5 ) = h . c . f . of 1550 and 2032 = 2 . answer : c"
gcd(subtract(2037, 5), subtract(1557, 7))