A Math Problem a Day keeps the doctor away
Wednesday, March 11, 2015
3/11/15
(a,b) = gcd(a,b) and [a,b] = lcd(a,b).
Prove (a,b,c)^2/(a,b)*(b,c)*(c,a) = [a,b,c]^2/[a,b]*[b,c]*[c,a]
Hint: Use combinatorial identities
Level: 6
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