The probability of picking a red ball from a bag of 4 white 5 black and 6 red balls is

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Solution

The no.of favourable outcomes is $6$
The no .of balls in bag is $4 + 5 + 6 = 15$
The probability of picking red ball is $\frac{6}{15} = \frac{2}{5}$

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The probability of picking a red ball from a bag of 4 white 5 black and 6 red balls is

The no.of favourable outcomes is 6 The no .of balls in bag is 4+5+6=15The probability of picking red ball is 615=25

The no.of favourable outcomes is $6$
The no .of balls in bag is $4 + 5 + 6 = 15$
The probability of picking red ball is $\frac{6}{15} = \frac{2}{5}$