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Standard X

Mathematics

Equally Likely Outcomes

Four friends ...

Question

Four friends named Ravi, Suresh, Rani, Geetha put their names in a box. A name is picked at random. What is the probability of getting a boy's name

$\frac{1}{4}$

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$1$

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$\frac{3}{4}$

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$\frac{1}{2}$

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Solution

The correct option is D
$\frac{1}{2}$

Total number of names = 4

Favourable outcome ( Number of cards with boy's name) = Ravi, Suresh

= 2

$Probability to get a boy's name = \frac{Number of boys}{Total number of names}$

$= \frac{2}{4}$

$= \frac{1}{2}$

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Four friends named Ravi, Suresh, Rani, Geetha put their names in a box. A name is picked at random. What is the probability of getting a boy's name

The correct option is D 12 Total number of names = 4 Favourable outcome ( Number of cards with boy's name) = Ravi, Suresh = 2 Probability to get a boy's name= Number of boysTotal number of names = 24 = 12

The correct option is D
$\frac{1}{2}$

Total number of names = 4

Favourable outcome ( Number of cards with boy's name) = Ravi, Suresh

= 2

$Probability to get a boy's name = \frac{Number of boys}{Total number of names}$

$= \frac{2}{4}$

$= \frac{1}{2}$