Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

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

How many times do a clock's hands overlap in a day ?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?