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Which numbers is even and also prime?
Two is the only even number that is prime. A prime number is one divisible only by one and itself. Every even number larger than two is divisible by two; hence, it is not prime. Whilst 2 is also divisible by 2, it is not divisible by any number other than 1 and itself; thus, 2 is the only even number that is also prime.
Why is 2 the only even prim number?
All other even numbers are divisible by two. Since two is only divisible by one and itself, it is prime.
Why is there only one even prime number?
By definition, a prime number is evenly divisible only by 1 and by itself. And also by definition, an even number is any number that is evenly divisible by two. The only number that satisfies both of these defined conditions is the number two.
What is a number that is divisible by two?
An even number.
How do you know that a number is divisible by 2?
If a number is even, it's divisible by two.
