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  • Provide solution for RD sharma maths class 12 chapter 30 Probablity Exercise very short answer question, question 10

Provide solution for RD sharma maths class 12 chapter 30 Probablity Exercise very short answer question, question 10

Answers (1)

The probability that a number selected at random from the set of members {1,2,3….} is \frac{1}{25}

Hint:

Identify number from the set of {1,2,………..100] which are perfect cube & hence find probability.

Given:

Given set of number is {1,2, 3,……….100}

Explanation:

S = {1,2,3………………….100}

n(S) = 100

Let A be the event that the number is cube.

A = {1,8,27,64}

n(A)=4

P(A) = \frac{n(A)}{n(S)}\\ =\frac{4}{100}\\ =\frac{1}{25}

Hence the required probability is \frac{1}{25}

 

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