Find the L.C.M of the following numbers: (a) 9 and 4 (b) 12 and 5 (c) 6 and 5 (d) 15 and 4 Observe a common property in the obtained L.C.Ms. Is L.C.M. the product of two numbers each case?

(a) L.C.M of 9 and 4 = 2×2×3×3 = 36
(b) L.C.M of 12 and 5 = 2×2×3×5 = 60
(c) L.C.M of 6 and 5 = 2×3×5 = 30
(d)L.C.M of 15 and 4 = 2×2×3×5 = 60

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