A Fun Zone's Brain Teaser #102

A brain teaser is a form of puzzle that requires thought to solve. It often requires thinking in unconventional ways with given constraints in mind; sometimes it also involves lateral thinking. Logic puzzles and riddles are specific types of brain teasers.
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Brain Teaser #102

What Is It?

1. There are four colored balls in a hat: two red, one black and one blue. After pulling out two of them, you know that one of them is red, but you do not know which one. What is the probability that both balls are red?

2. While walking across a bridge I saw a boat full of people. Yet on the boat there wasn't a single person. Why?


The Solution

Definition of solution - a means of solving a problem or dealing with a difficult situation. Our Free Brain Teaser Newsletter

1. 1 in 5. The only possible combinations are:
[1] red1, black
[2] red1, blue
[3] red1, red2
[4] red2, black
[5] red2, blue
[6] black, blue

2. Everyone on the boat was married.