the lcm ( 28,63) is 252 ,then their hcf
a 28,
b, 7
c 9
d, 63
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Answer:
lcm =252
HCF= ?
a x b = HCF x lcm
28 x 63 = HCF x 252
1764/252= HCF
HCF = 7 (b option)
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