Question

5) If cd(a,b)=3 and lcm(a,b)= 30 ,if a=6 then b=?​

Answer 1

Solution:

HCF × LCM = a×b

$3 \times 30 = 6 \times b \\ \frac{90}{6} = b \\ b = 15$

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Answer 2

Answer:

HCFxLCM

=axb

3x30=6xb

90/6=b

b=15

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