One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

How can one talk without saying a single word?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What work can one never finish?

There is a place where if I stand up straight, I will still be considered sideways.

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?