Brain Teaser #116

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. AALLLOUGNINCEACELSSSEANRYTELNETCTEERS
If you cross out all unnecessary letters in the above string of letters, a logical sentence will remain. Can you read it?
Solution
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Brain Teaser #109

1. Josh is writing a book. He starts on page 1. When he finished, he used a total of 228 digits. How many pages does he have?

2. At Probability University, there are 375 freshmen, 293 sophomores, 187 juniors, & 126 seniors. One student will randomly be chosen to receive an award. What percent chance is there that it will be a junior? Round to the nearest whole percent.
Solution
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Wearable Technology - It's All Here

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?
Solution
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Buffalo Games: Brain Games, Jigsaw, Word, Number and so much more...

Brain Teaser #52

1. Three Points on a Hemisphere
Three points are selected at random on a sphere's surface. What is the probability that they all lie in the same hemisphere? Assume that the great circle, bordering a hemisphere, is part of the hemisphere.

2. I am a window, I am a lamp, I am clouded, I am shining, and I am colored; set in white, I fill with water and overflow. I say much, but I have no words. What am I?
Solution
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Brain Teaser #33

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.
Solution
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Car & Vehicle Electronics

Brain Teaser #2

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.
Solution
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