What is a mirror prime number?

We will call a number “mirror prime”, if it is prime, and the number written in a reverse order is also prime. What do prime numbers mean spiritually? A p...

What are words for balance?

stasis. What is the word for perfect balance?synonyms for well-balanced graceful. astute. aware. cognizant. discriminating. What is a word for balance poi...

What is odd subtract odd?

When you subtract any number from an even number, the answer is always even. It turns out even every time because if you start with an odd number, the squ...