Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

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 ?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

In the image below, can you find the value of an angle(y)

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Why do you find that most of the buildings are deprived of the 13th floor?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?