Question

Find the HCF of the number by the prime factorisation method :-
But Please give Very Simple method , I will mark you as Brainliest....

28, 42, and 49​

Answer 1

2. Write all numbers as the product of its prime factors

Prime factors of 28 = 22 . 7

Prime factors of 42 = 2 . 3 . 7

Prime factors of 49 = 72

3. Choose the common prime factors with the lowest exponent

Common prime factors: 7

Common prime factors with the lowest exponent: 71

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 71 = 7

Answer 2

Answer:

The H.C.F is 7

Step-by-step explanation:

this is so because the numbers 28,42 & 49 have the most common number 7..