1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

What does the below rebus riddle means?

Why is the longest human nose just 11 inches?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

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

Explain how?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Where do you go to learn how to make ice cream?

I am white when I am dirty, and black when I am clean. What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What does this rebus mean?

O
N
C
E
TIME