find HCF and LCM using prime factorisation method 1) 84,90,120
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here is your ans mate....
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Step-by-step explanation:
84 = 2 x 2 x 3 x 7
90 = 2 x 5 x 3 x 3
120 = 2 x 2 x 2 x 3 x 5
LCM = 2 x 2 x 2 x 3 x 3 x 5 x 7
= 8 x 9 x 35
= 2520
HCF = 2 x 3 = 6
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