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Delicate Divisibility (Posted on 2010-10-19) Difficulty: 3 of 5
For a positive base ten integer of the form ABCD drawn at random between 1111 and 9999 inclusively, determine the probability that ABCD is divisible by each of AB, AC, AD, BD and CD; but, not divisible by BC.

Note: Each of the letters in bold represents a digit from 1 to 9, whether same or different.

No Solution Yet Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
partial analytical solution.broll2010-10-21 08:25:14
re(3): ABACADABrA (Solution)Jer2010-10-20 01:30:59
re(2): ABACADABrA (Solution)ed bottemiller2010-10-19 20:04:51
re: ABACADABrA (Solution)Charlie2010-10-19 19:12:46
Solutionby computerCharlie2010-10-19 19:07:05
solutioned bottemiller2010-10-19 17:54:29
SolutionABACADABrA (Solution)Jer2010-10-19 17:07:14
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