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January 28, 2015

January 28, 2015

Posted by **peter** on Monday, June 28, 2010 at 2:15pm.

how do you do this problem?

- math -
**bobpursley**, Monday, June 28, 2010 at 3:15pmIT must occur on the 21st, 42nd, 63rd, 84th persons.

Pr= 4/100

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