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[Post New]7 Oct 2007 22:25:18 IST
    Subject: Maths Olympiad ---> PnC
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johri_anshuman (1188)

Blazing goIITian

Olaaa!! Perrrfect answer. 198  [297 rates]
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How many 6 digit numbers are there such that they fulfill the following 2 conditions
a)    The digits of each number are from {1,2,3,4,5}
b)    Any digit that appears in the number appears at least twice (eg. 225252 is admissible while 222133 is not)
    
 

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