What is harder to catch the faster you run?

What you cannot hold but it is yours?

Why do we preferably have round manhole covers and not square ones?

Count the number of balls in picture below:

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Replace the question mark with the correct number in below Picture:

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

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?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?