Mathematics Problem Of the Week

Fall 2005

POW #7

Three Chips

Ten poker chips have numbers written on them so that one chip is numbered “1”, two chips are numbered “2”, three chips are numbered “3” and the rest are numbered “4”. The chips are placed in a bag and three chips are drawn at random without replacement. What is the probability that the sum of the numbers on the chips drawn is divisible by 5?

Due Friday, October 14^th at Noon

(or before break)

Special this week: This problem is part of a national collegiate problem solving competition.

Solutions should be submitted to Dr. R. Lock's mailbox in the Math office or sent via e-mail to rlock@stlawu.edu.