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ramiy · 07-24-2008, 01:35 PM

Can anybody explain the solution ?
Gmat G why did u take 25*25 and for the third case 25*25*25 .

Dont we have to apply combinations formula

25 + 25C2 + 25C3 . Please correct me if iam wrong

07-24-2008, 01:35 PM	#5 (permalink)
ramiy Within my grasp! Join Date: Dec 2006 Posts: 411	Can anybody explain the solution ? Gmat G why did u take 2525 and for the third case 2525*25 . Dont we have to apply combinations formula 25 + 25C2 + 25C3 . Please correct me if iam wrong