I’m tall when I’m young, and I’m short when I’m old. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

A blonde put eyeliner on her head. Why?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

10+10 and 11+11 can give you the same answer.

Explain how?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

What does this say?

XLR8

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?