A LCM Fact
2,520 is the “smallest” number which is divisible by “all” numbers from 1 to 10.
How? Why?
LCM = Least Common Multiple
So,
LCM (1,2,3,4,5,6,7,8,9,10)
= 5 x 7 x 2^3 x 3^2
= 5 x 7 x 8 x 9
= (8 x 5) x (9 x 7)
= 40 x 63
= 2,520 (Answer)
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