Maharashtra State BoardHSC Science (General) 11th
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Find n(S) of the following random experiment. 3 tickets are drawn from a box containing 20 lottery tickets. - Mathematics and Statistics

Sum

Find n(S) of the following random experiment.

3 tickets are drawn from a box containing 20 lottery tickets.

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Solution

3 tickets can be drawn from a box containing 20 lottery tickets in 20C3 ways.

∴ n(S) = 20C3

= `(20*19*18)/(1*2*3)`

= 1140

Concept: Basic Terminologies
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