Random Puzzles - BrainBashers

Puzzle 17

In the local wood there are a number of trees. On these trees there are a number of birds.

A local bird spotter knows that there are as many birds on each tree as there are trees in the wood, and that there are between 2,000 and 2,100 birds in total.

How many trees are there in the wood?

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Puzzle 18

The same three-letter word has been removed from all of these words, leaving the letters below (which are still in the correct order).

What was the three-letter word?
loe ch she er vae

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Puzzle 19

Are there more …

… 2's or 8's in the numbers from 1 to 50,000?

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Puzzle 20

10
100
1,000
10,000

Which number comes after 10,000?

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