Page 76 - Concepts of Reasoning-8

CHAPTER

Worksheet-16.1 Probability 16

Probability

1. List all the possible outcomes of the experiment, ‘tossing 3 five rupee coins simultaneously’ :

1st coin 2nd coin 3rd coin Outcomes

5
rupees (H, H, H)
5
rupees
5
rupees
5
rupees
5
rupees
5
rupees
5
rupees

5
rupees
5
rupees
5
rupees
5
rupees
5
rupees
5
rupees
5
rupees

Answer the following :
a. Total number of outcomes ____________________
b. Probability of getting at least one head ____________________
c. Probability of getting at least two heads ____________________
d. Probability of getting at most two heads ____________________
e. Probability of getting no heads ____________________

Mental Maths

1. On tossing a coin, what is the probability of not getting a head or tail?
___________________________________________________________________________
2. What is the probability of getting a vowel or a consonant, when a letter is chosen from an English
alphabet?
___________________________________________________________________________
3. What is the range of the probability of an event ‘E’?
___________________________________________________________________________
4. What is the sum of the probabilities of all the elementary events of an experiment?
___________________________________________________________________________

76 Reasoning - 8