chapter-header

NCERT Solutions Class 10 Mathematics Solutions for Probability - Exercise 15.1 in Chapter 15 - Probability

Question 58 Probability - Exercise 15.1

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears a number divisible by 5.

Answer:

The total numbers of discs = 50

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

otal numbers which are divisible by 5 = 18 (5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85 and 90)

P (getting a number divisible by 5) = 18/90 = ⅕ = 0.2

Connect with us on social media!
2022 © Quality Tutorials Pvt Ltd All rights reserved