RS Aggarwal Solutions Class 8 Mathematics Solutions for Probability Exercise 25B in Chapter 25 - Probability

Question 2 Probability Exercise 25B

8 cards are numbered as 1, 2, 3, 4, 5, 6, 7, 8 respectively. They are kept in a

box and mixed thoroughly. One card is chosen at random. What is the

probability of getting a number less than 4?

a) ½

b) ¾

c) 3/8

d) 3/5

Answer:

we know that the,

Total number of cards kept in the box = 8

∴ number of cards having a number less than 4 on it = 3

By using the formula,

Probability p () = number of favorable outcomes/ total number of outcomes

∴ Probability of selecting a card with a number less than 4 on it p(no.of cards less than 4)

= number of cards having a number less than 4/total number of cards =3/8

Related Questions

Exercises

Probability Exercise 25A

Probability Exercise 25B

Chapters

Rational Numbers

Exponents

Squares and Square Roots

Cubes and Cube Roots

Playing with Numbers

Operations on Algebraic Expressions

Factorisation

Linear Equations

Percentage

Profit and Loss

Compound Interest

Direct and Inverse Proportions

Time and Work

Polygons

Parallelograms

Construction of Quadrilaterals

Area of a Trapezium and a Polygon

Three-Dimensional Figures

Volume and Surface Area of Solids

Data Handling

Introduction to Coordinate Geometry

Line Graphs and Linear Graphs

Pie Charts

Probability