Highest Common Factor

Author:NCERT
6th CBSE
IMPORTANT

Highest Common Factor: Overview

The topic describes methods of listing the factors, prime factorisation and long division method for finding the HCF. The HCF is nothing, but the highest common factor of the numbers.

Important Questions on Highest Common Factor

EASY
IMPORTANT

Fatima wants to mail three parcels to three village schools. She finds that the postal charges are 20, 28 and 36, respectively. If she wants to buy stamps only of one denomination, what is the greatest denomination of stamps she must buy to mail the three parcels?

MEDIUM
IMPORTANT

A merchant has 120 litres of oil of one kind, 180 litres of another kind and 240 litres of a third kind. He wants to sell the oil by filling the three kinds of oil in tins of equal capacity. What should be the greatest capacity of such a tin?

EASY
IMPORTANT

The H.C.F. of two or more given numbers is the highest of their common _____. (multiples/ factors)

EASY
IMPORTANT

The H.C.F. of two numbers is smaller than the smaller of the numbers.

EASY
IMPORTANT

HCF of two or more numbers may be one of the numbers.

MEDIUM
IMPORTANT

Which of the following statements is not true?