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Two six-sided dice (number cubes) are rolled. Find the probability P(sum of 8 or doubles).
1/3 third
11/36
7/18
5/18


Sagot :

Answer:

5/18

Step-by-step explanation:

The attached chart shows all 36 outcomes, equally likely.

There are 6 outcomes that are doubles (along a diagonal), 5 outcomes that have a sum of 8, but the (4, 4) outcome should only be counted once!

You're interested in 6 + 5 - 1 = 10 outcomes out of the 36 possible outcomes.

Probability of double or sum = 8:  10/36 = 5/18