perplexus.info :: Just Math : Positive Integer ≠ (2P – 2Q)/(2R

Positive Integer ≠ (2^P – 2^Q)/(2^R – 2^S) (Posted on 2009-11-07)

Determine the smallest positive integer X, such that X is not expressible in the form (2^P – 2^Q)/(2^R – 2^S), where each of P, Q, R and S is a positive integer.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

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Subject	Author	Date
Solution	Praneeth	2010-01-08 10:12:37
solution conditions	Daniel	2009-11-08 07:16:04
solution with proof	Daniel	2009-11-07 17:18:52

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