Question

if Hcf (a,b)=1 then why 3 can't be a common divisor of a and b​

Answer 1

Step-by-step explanation:

because if 3 is a common divisor of a and b, then 3 will divide both a and b, as hcf means the greatest number that will divide all the given numbers, here hcf is 1 which means only 1 divides both a and b, hence 3 cannot be a common divisor,.....hcf 1 clearly means that both of a and b were co prime to each other