Question

There are 5 marbles in a box with number from 1 to 5 marked on each of them . (a) what is the probability of drawing a marble with number 4 ? (b) what is the probability of drawing a marble with number 3 ?

Answer 1

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(a)

Total No of outcomes = 5

Favourable outcome = 1 ( as there is only one marble named 4)

$p(e) = \frac{favourable \: outcomes}{total \: no \: of \: outcomes \: }$

$p(e) = \frac{1}{5}$

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(b)

Total no. of outcome = 5

Favourable outcomes = 1

$p(e) = \frac{1}{5}$