Brain Teasers
A Prime (Number) Problem
There is a number that fulfills all of the following criteria/rules:
1. It is prime.
2. It is a whole number.
3. It is greater than or equal to 1.
4. If you double it, square it, or add itself to it, you get the same single-digit even number answer for each operation.
What is this number?
1. It is prime.
2. It is a whole number.
3. It is greater than or equal to 1.
4. If you double it, square it, or add itself to it, you get the same single-digit even number answer for each operation.
What is this number?
Hint
The "single-digit even number" mentioned in the 4th criterion/rule is equal to the number of criteria that the "mystery number" fulfills.Answer
2.2 is prime.
2 is a whole number.
2 is greater than 1.
2 x 2 = 4.
2 ^ 2 = 4.
2 + 2 = 4.
4 is a single-digit even number, and is the answer for all the above operations.
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