what's the probability of getting a king or a queen from a pack of 52 cards?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

When can we add 2 to 11 and get 1 as the correct answer?