Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

If 21x = 79x, what is the value of x?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

If 1+9+8=1, what is 2+8+9?

What jumps when it walks and sits when it stands?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

There is something which is always coming but never arrives?

Which is the smallest number that you can write using all the vowels exactly once?