I am an odd number. Take away a letter and I become even. What number am I?

You see me once in June, twice in November, and not at all in May. What am I?

A tourist visits a small town for his research. While in the town, he decides to get a haircut. Since the town is quite small, there are only two barbers in the town � one on the North Street and one on the South Street. The barbershop on the North Street is a mess and the barber has a weird and pathetic haircut. While the barbershop at the South Street is pretty tidy and the barber as well has an impressive haircut.

Which barbershop will the tourist visit for his haircut and why?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

You bought me for dinner but never eat me. What am I?

It belongs to you, but other people use it more than you do. What is it?

I cannot talk, but I always reply when spoken to. What am I?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?