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An Intiative by Sri Chaitanya
a
L.C.M = 210 and H.C.F = 5
b
L.C.M = 420 and H.C.F = 3
c
L.C.M = 230 and H.C.F = 4
d
L.C.M = 450 and H.C.F = 7
answer is B.
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