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RS Aggarwal Solutions Class 9 Mathematics Solutions for Probability Exercise 19 in Chapter 19 - Probability

Question 1 Probability Exercise 19

A coin is tossed 500 times and we get Heads: 285 times and tails: 215 times.

When a coin is tossed at random, what is the probability of getting

(i) a head?

(ii) a tail?

Answer:

It is given that

Number of trials = 500

Number of heads = 285

Number of tails = 215

(i) Consider E as the event of getting a head

So we get

P (E) = number of heads coming up/ total number of trials

By substituting the values

P (E) = 285/500

We get

P (E) = 0.57

(ii) Consider F as the event of getting a tail

So we get

P (F) = number of tails coming up/ total number of trials

By substituting the values

P (F) = 215/500

We get

P (F) = 0.43

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