What is so fragile that saying its name breaks it?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?

What is both possible and impossible at the same time?

What four weights can be used to balance from 1 to 30 pounds?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

What has 88 keys?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?