1)2 dice are tossed together. What is the probability that a)the sum of the upturned faces equals to 7?  (1/6) b)the scores on the 2 dice differ by 2 or less? (2/3)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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1)2 dice are tossed together. What is the probability that

a)the sum of the upturned faces equals to 7?  (1/6)

b)the scores on the 2 dice differ by 2 or less? (2/3)

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