BrainBashers - Random Puzzles

Puzzle 1

What is the 20^th prime number?

2, 3, 5, 7, …

www.brainbashers.com /puzzle/zacp share

Puzzle 2

Each of these words can be split in half, and two letters can be placed in the middle to create a new six-letter word.

The four added pairs of letters, in order, spell an 8-letter word. What is that word?
lend
liar
pale
coin

For example:
door + ct = do + ct + or = doctor
suit + nl = su + nl + it = sunlit

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www.brainbashers.com /puzzle/zzqo share

Puzzle 3

Imagine a bottle recycling skip, empty other than one lonely bottle.

Every hour, on the hour, people come and put bottles into the skip.

The first hour, at noon, one person came and put a bottle in.

One hour later, two people each placed a bottle into the skip.

An hour later, four people each placed a bottle into the skip.

This doubling of people continued until 11pm, when the skip was finally full.

When was the skip exactly half full?

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www.brainbashers.com /puzzle/zfkx share

???

Puzzle 4

What is the next number in the sequence:

32 · 35 · 40 · 44 · 52 · 112 · ?

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