Find the HCF of 84 and 90 - Maths - Q-A

Find the HCF of the given numbers Prime factorise 84 and 90 as follows:84 = 2× 2× 3× 70ex0ex90 = 2× 3× 3× 5Common factors are 2 and 3So, the highest common fact ...

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Standard X

Mathematics

GCD of Polynomials

Find the HCF ...

Question

Find the HCF of $84$ and $90$ .

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Solution

Find the HCF of the given numbers
Prime factorise $84$ and $90$ as follows:
$84 = 2 \times 2 \times 3 \times 7 90 = 2 \times 3 \times 3 \times 5$
Common factors are $2$ and $3$
So, the highest common factor is $2 \times 3 = 6$ .
Hence, HCF of $84$ and $90$ is $6$ .

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Find the HCF of 84 and 90.

Find the HCF of the given numbers Prime factorise 84 and 90 as follows:84=2×2×3×790=2×3×3×5Common factors are 2 and 3So, the highest common factor is 2×3=6.Hence, HCF of 84 and 90 is 6.

Find the HCF of $84$ and $90$ .

Find the HCF of the given numbers
Prime factorise $84$ and $90$ as follows:
$84 = 2 \times 2 \times 3 \times 7 90 = 2 \times 3 \times 3 \times 5$
Common factors are $2$ and $3$
So, the highest common factor is $2 \times 3 = 6$ .
Hence, HCF of $84$ and $90$ is $6$ .