PROBABILITY 2

The probability of selecting a red ball from a box is ⁵/23. Find the probability of not selecting a red ball.

Solution

P(E) + P(E’) = 1

Now, P(E) = ⁵/23, P(E’)=?

P(E) + P(E’) = 1

⁵/23 + P(E’) = 1

P(E’) = 1 - ⁵/23

P(E’) = ²³/23 - ⁵/23

P(E’) = ¹⁸/23

Hence the probability of not selecting a red ball is ¹⁸/23.

TRY THIS……………………………………

The probability of selecting a red ball from a box is ⁸/25. Find the probability of not selecting a red ball.