If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

What am I?

If two's company, and three's a crowd, then whats four and five ?

What number when divided in half becomes zero?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.