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Three boys are ages 4, 6 and 7 respectively. Three girls are [#permalink]
09 Dec 2012, 09:05

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68% (03:05) correct
32% (01:59) wrong based on 97 sessions

Three boys are ages 4, 6 and 7 respectively. Three girls are ages 5, 8 and 9, respectively. If two of the boys and two of the girls are randomly selected and the sum of the selected children's ages is z, what is the difference between the probability that z is even and the probability that z is odd?

Re: Three boys are ages 4, 6 and 7 respectively. Three girls are [#permalink]
09 Jul 2014, 06:00

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Good news for globetrotting MBAs: travel can make you a better leader. A recent article I read espoused the benefits of traveling from a managerial perspective, stating that it...