Consecutive letters of the alphabet, starting with A, are given increasing consecutive whole numbers. If E + G...

Rosie has a fish tank in her room with only one kind of fish. She notices that the male fish have 9 stripes an...

The sum of the digits in the number 994 is 9 + 9 + 4 = 22. How many 3-digit even numbers are there t...

What are the last two digits of \(5^{100}\)?

These 7 people play a tournament, where each person plays 2 matches with 2 of their peers. Every person who wi...

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