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How about easier method:

x^3-x=n*24 -> where n is integer number
x(x^2-1)=n(5^2-1)

so n=5 and answer is yes

by alexshv

Mon Jul 05, 2010 12:33 pm
Forum: Quantitative Reasoning
Topic: Question about Example in MGMAT Num Prop. Book
Replies: 4
Views: 2000