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