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

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?