In the four images below, can you find the odd one out?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Prove that the below maths equation is true.

8 + 8 = 91

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

What runs around the whole yard without moving?

What can you catch but never throw?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?