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Rooting for two digits (Posted on 2011-06-24) Difficulty: 3 of 5
Determine the probability that for a positive integer N chosen at random between 1000 (base ten) and 9999 (base ten) inclusively, the number formed by the last two digits (reading left to right) of N is a divisor of [√N].

Notes:

(I) [x] denotes the greatest integer ≤ x

(II) Reading from right to left, the second digit of N is nonzero.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
Solutioncomputer solutionCharlie2011-06-24 17:20:33
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