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![[Post New]](/templates/default/images/icon_minipost_new.gif) 11 Feb 2008 09:32:12 IST
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For P4-Q4 to be divisible by 4, both P and Q should be even or P and Q should be odd. This gives 12*12 + 13*13 = 169+144 = 313 favourable pairs out of 625 possible pairs. Hence prob = 313/625.
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Time wounds all heels |
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