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Question
In a single throw of a dice, find the probability of getting a number less than or equal to 4.
Solution
Sample space = {1, 2, 3, 4, 5, 6}
n(s) = 6
E = event of getting a number less than or equal to 4 = {1, 2, 3, 4}
n(E) = 4
Probabitity of a number less than or equal to 4 = `(n(E))/(n(s)) = 4/6 = 2/3`
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Assertion (A): A die is thrown once and the probability of getting an even number is `2/3`.
Reason (R): The sample space for even numbers on a die is {2, 4, 6}.
