Gujarati
14.Probability
easy

The probability of getting a total of $5$ or $6$ in a single throw of $2$ dice is

A

$\frac{1}{2}$

B

$\frac{1}{4}$

C

$\frac{1}{3}$

D

$\frac{1}{6}$

Solution

(b) Total number of ways $ = 36$

Favourable numbers of cases are $(1\,\,4),\,(2,\,\,3),\,(3,\,\,2),$

$(4,\,\,1),\,(1,\,\,5),\,(2,\,\,4),\,(3,\,\,3),\,(4,\,\,2),\,(5,\,\,1) = 9$

Hence the required probability $ = \frac{9}{{36}} = \frac{1}{4}.$

Standard 11
Mathematics

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