Random Puzzles 

Only using the letters A I O S T, what is the longest word you can find?

You may use each letter more than once.

Puzzle Copyright © Kevin Stone

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What number comes next in this sequence:

1 · 3 · 5 · 7 · 11 · ?

Puzzle Copyright © Kevin Stone

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What comes next in this sequence:

M · N · B · V · C · X · ?

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If it took …

… Alex, Billie and Charlie exactly 60 minutes to dig a hole …

how long would it take for them …

… to dig half a hole?

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