I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

What do you think with the below Picture ?

I have branches, but no fruit, trunk or leaves. What am I?

Why Wine Glass Stem is so long?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

Prove that the below maths equation is true.

8 + 8 = 91