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A Dice is Rolled Twice. Find the Probability that 5 Will Come up Exactly One Time - Mathematics

Sum

A dice is rolled twice. Find the probability that 5 will come up exactly one time   

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Solution

The outcomes where 5 will come up exactly one time are

(1, 5), (2, 5), (3, 5), (4, 5), (5, 1), (5, 2), (5, 3), (5, 4), (5, 6), (6, 5)
So, the number of favourable outcomes are 10.
∴ P(5 will come up exactly one time) = \[\frac{\text{ Favourable number of outcomes }}{\text{ Total number of outcomes }} = \frac{10}{36} = \frac{5}{18}\] 

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APPEARS IN

RD Sharma Class 10 Maths
Chapter 16 Probability
Exercise 16.1 | Q 64.2 | Page 26
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