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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

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