[3 / 1 / ?]

No.255232 ViewReplyOriginalReport

Can you help me with this task?,
I tried to calculate the right answer and got 14 % but the correct answer is 24 %, how is this correctly calculated?

The three major options on a car model are an automatic transmission (A), a sunroof (B), and an upgraded stereo (C). If 70% of all purchasers request A, 80% request B, 75% request C, 85% request A or B, 90% request A or C, 95% request B or C, and 98% request A or B or C.

What is the probability that the next costumer will select exactly one of these three options?