RD Sharma Solutions Class 10 Mathematics Solutions for Probability Exercise 13.1 in Chapter 13 - Probability

Question 90 Probability Exercise 13.1

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random.

What is the probability that the marble taken out will be red.



The possibility that an event will occur is referred to as the probability of the event. In mathematics, this possibility of an event happening is represented by a number between 0 and 1.


A box containing 5 red, 8 white and 4 green marbles.

So, the total no. of possible outcomes = 17 (5 red + 8 white + 4 green)

Let E = Event of getting a red marble

Number of favourable outcomes = 5 (as 5 red marbles)

Probability, P(E) = Number of favourable outcomes/ Total number of outcomes

P(E) = 5/17

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