Question

Find the HCF of 30, 40​

Answer 1

Answer:

10

Explanation:

40÷30 then the remainder=10

10÷30(acc. to rule)=3and remainder=0 so hcf =10

Answer 2

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Answer:

Prime factorisation of :

30= 2×3×5= 2¹×3¹×5¹

40= 2×2×2×5=2³×5¹

We know that the HCF(Highest common factor) of two integers is the lowest power of its prime factors.

We can also find the HCF by taking the common factors of the given integers.

Here,

2 and 5 are the common factors in the prime factorisation of 30 and 40.

Therefore, HCF(30,40)=2×5=10