The probability of getting a composite number is:

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A fair die is thrown once. The probability of getting a composite number is
(a) \\ \frac { 1 }{ 3 }
(b) \\ \frac { 1 }{ 6 }
(c) \\ \frac { 2 }{ 3 }
(d) 0

Solution:

A fair die is thrown once
Total number of outcomes = 6
Composite numbers are 4, 6 = 2
Probability = \\ \frac { 2 }{ 6 } = \\ \frac { 1 }{ 3 } (a)

If a fair dice is rolled once, then the probability of getting an even number or a number greater than 4 is
(a) \\ \frac { 1 }{ 2 }
(b) \\ \frac { 1 }{ 3 }
(c) \\ \frac { 5 }{ 6 }
(d) \\ \frac { 2 }{ 3 }

Solution:

A fair dice is thrown once.
Total number of outcomes = 6
Even numbers or a number greater than 4 = 2, 4, 5, 6 = 4
Probability = \\ \frac { 4 }{ 6 } = \\ \frac { 2 }{ 3 } (d)

Rashmi has a die whose six faces show the letters as given below :
ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 22 Probability MCQS Q9.1
If she throws the die once, then the probability of getting C is
(a) \\ \frac { 1 }{ 3 }
(b) \\ \frac { 1 }{ 4 }
(c) \\ \frac { 1 }{ 5 }
(d) \\ \frac { 1 }{ 6 }

Solution:

A die having 6 faces bearing letters A, B, C, D, A, C
Total number of outcomes = 4
Probability of getting C = \\ \frac { 2 }{ 6 } = \\ \frac { 1 }{ 3 } (a)

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