Random Puzzles 

My friend's son, Billy, has the same number of brothers as sisters.

His sister, Laura, has twice as many brothers as she has sisters.

How many boys and girls are in the family?

Puzzle Copyright © Kevin Stone

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What letter comes next in this sequence:

P  O  I  U  Y  T  ?

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Consider an arrow in flight towards a target.

At any given moment of time, a snapshot could be taken of this arrow. In this snapshot, the arrow would not be moving. Let us now take another snapshot, leaving a very small gap of time between them. Again, the arrow is stationary. We can keep taking snapshots for each moment of time, each of which shows the arrow to be stationary. Therefore the overall effect is that the arrow never moves, however it still hits the target!

Where lies the flaw in the logic?

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At a picnic recently, I noticed that:

Charles liked biscuits, but didn't like custard.
Mary liked quiche, but didn't like marshmallows.
Brian liked apples, but didn't like biscuits.
James liked chocolate, but didn't like jelly.
Did David like doughnuts?

Puzzle Copyright © Kevin Stone

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