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Random Puzzles 


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Puzzle 17 


What is the next number in this sequence:

1 · 1 · 2 · 4 · 3 · 9 · 4 · 61 · 5 · 52 · 6 · 63 · 7 · 94 · 8 · ?

Puzzle Copyright © Kevin Stone

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Puzzle 18 


Starting in the bottom left corner and moving either up or right, adding up the numbers along the way, what is the largest sum that can be made?

Note: this puzzle is not interactive, and the numbers cannot be clicked.

Puzzle Copyright © Kevin Stone

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Puzzle 19 


If 5 cats can catch 5 rats in 5 minutes …

… how many cats do you need to catch 100 rats in 100 minutes?

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?

Puzzle 20 


Richard, Kevin, and James like coffee …

… Andrew, Anne, and John don't.

Does Simon like coffee?

Puzzle Copyright © Kevin Stone

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