Class 9 · Mathematics · Ganita Manjari

7. The Mathematics of Maybe: Introduction to Probability

Try question 1

A fair coin is tossed once. The probability of getting a tail is

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Answer and explanation

Answer: B. 1/2

Two equally likely outcomes, one of which is a tail.

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Try question 2

The probability of an event that is certain to happen is

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Answer and explanation

Answer: C. 1

A sure event has probability 1.

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Try question 3

A die is thrown. The probability of getting a number greater than 4 is

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Answer and explanation

Answer: B. 1/3

5 and 6 are favourable: 2 out of 6 = 1/3.

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