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Probability

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Question : 40 of 127

Marks: +1, -0

A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupee coins. If a coin is selected at random from the bag, then the probability of not selecting a one rupee coin is

$0.30$
$0.70$
$0.25$
$0.20$

Solution:

Concept:

The probability of not selecting a one rupee coin is the ratio of the number of coins that are not one rupee to the total number of coins.

Explanation:

Total coins

= 15 + 25 + 10 = 50

.

Coins that are not one rupee

= 25 + 10 = 35

.

Required probability

= \frac{35}{50} = 0.70

.

Answer:

0.70

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