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On The Podium

In how many different ways can the first, second and third prize winners be selected from a group of 8 people running a race? [assume that there are no ties].

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Two Trains

Two trains are approaching each other from opposite directions with the speeds 10 miles per hour and 20 miles per hour, and heading for a collision. If they are a quarter mile apart, how long will it take for them to collide?

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Pick Teams

From a group of 5 men and 7 women, in how many different ways can a team of 2 men and 3 women be formed?

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What’s My Age Again

A father’s age is twice the sum of the ages of his four sons. In 30 years, the total of the sons’ ages will be twice the age of their father. How old is the father now?

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Scientific Notation

What is 2004.28 in scientific notation?

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Fahrenheit to Celsius

If the temperature drops by 18o Fahrenheit in a given day, how much did it drop in degrees Celsius?

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Mean and Standard Deviation

If the mean and standard deviation of the data set {12,14,19,x} are 15 and √26, respectively, x = ?

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Average Height

If the heights of three people are 5’8”, 5’2”, and 6’2”, what is their average height?

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Ace of Spades

A standard deck of 52 cards contains 13 cards each from the four suits: spades, clubs, diamonds and hearts. If two cards are randomly picked without replacement, what is the probability that they are both diamonds?

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Office Space

If 3 out of every 8 people in an office are women, what is the ratio of men to women?

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