I am Double Myself

I am a prime number.
The double of myself is equal to the square of me.

which number am I?




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There is a jar in which there are two types of candies.
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You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

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There is something which you can be arrested for attempting but not for successfully completing.

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Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.