PROBABILITY 2

The probability of selecting a red ball from a box is ⁵/33. Find the probability of not selecting a red ball.

Solution

P(E) + P(E’) = 1

Now, P(E) = ⁵/33, P(E’)=?

P(E) + P(E’) = 1

⁵/33 + P(E’) = 1

P(E’) = 1 - ⁵/33

P(E’) = ³³/33 - ⁵/33

P(E’) = ²⁸/33

Hence the probability of not selecting a red ball is ²⁸/33.

TRY THIS……………………………………

The probability of selecting a yellow ball from a box is ¹³/28. Find the probability of not selecting a yellow ball.