HCF & LCM

Least Commom Multipler

The least number which is exactly divisible by each one of the given number is called as Least Common Multiplication.

H.C.F and L.C.M of fractions

H.C.F = (H.C.F of numerators) / (L.C.M of Denominators)
L.C.M = (L.C.M of numerators) / (H.C.F of Denominators)

Co-primes

Two numbers are said to be co-primes then their H.C.F is only 1.

Average of Numbers

Average = ( Sum of all the objects ) / ( Number of objects )

Product of two number = product of H.C.F and product of L.C.M