Can you find the odd number in the following?

2716, 4135, 5321 and 7145

I have teeth but i don't bite. Who Am I ?

What does below Rebus mean ?

esgg sgeg gegs gsge

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

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

A man dies of old age on his 25 birthday. How is this possible?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

What do you think with the below Picture ?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?