Question

Find the greatest that will divide 127 and 643 leaving remainder 3 in each cause

Answer 1

first we have to subtract 3 from 127 and 643 then the left is 124 and 640. now we have to take HCF of both the numbers. 124 =2*2*31. 640=2*2*2*2*2*2*2*5 Now HCF is 2*2=4 4 is the answer