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. Archive of Brain Teasers

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**1.** Brad Doe works for a packaging company. One day, he received four separate orders and accidentally mixed up the addresses, so he applied the address labels at random. What is the probability that exactly three packages were correctly labeled?

**2. **Imagine a square, with each side 4 cm long, inscribed in a circle. What is the radius of the circle?

**3. **Without looking at a calendar, within a minute name a boys name using 5 consecutive 1st letters of 5 consecutive months.

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

**1. **Zero. If three packages are correctly labeled, then so is the fourth.

**2.** Radius = 2.828

**3.** JASON----July August September October November