Question

find the hcf and lcm of 90 and 144​

Answer 1

Answer:

hcf is 9

LCM is 288

you can take both of them by long division method or prime factorization method

Answer 2

Step-by-step explanation:

$90 = 2 \times 5 \times 3 \times 3$

$144 = 2 \times 2 \times 3 \times 2 \times 3 \times 2$

$144 = {2}^{4} \times {3}^{2}$

$HCF = 2 \times {3}^{2} = 18$

$LCM = {2}^{4} \times 5 \times {3}^{2} = 720$

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