When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What does this rebus means ?

PROG WORKRESS

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member.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

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?