what does this picture(rebus) riddle means ?

Find the hidden tiger in the given optical illusion ?

If eleven plus two equals one, what does nine plus five equal?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

What brings you down but never up?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

What is so fragile that saying its name breaks it?

Why are all black people so quick ?