Chapter 11   


top nav

Sum Probability


Anna, Daisy, Jeff, and Russ are playing an addition game. Each person has picked one of the cards shown above. To score a point, a player must roll two number cubes and get the sum equal to the number of the card already selected. After three turns, each player selects a different card from the deck.

  • Anna has the greatest probability of scoring a point.
  • Even though Jeff has a card with a higher number, his chances of scoring a point are the same as Daisy's chances.
  • The probability that Russ will earn a point is greater than the probability that Jeff will.

Which card was selected by which player?
What is the probability of each player scoring a point on his or her first turn?


Kids' Place | Kids' Houghton Mifflin Mathematics | Brain Teasers
Education Place | Site Index

Copyright © 2000 Houghton Mifflin Company. All Rights Reserved.
Terms and Conditions of Use | Privacy Policy