How many sides does a circle have?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

Can you count the number of rectangles on a chessboard?

Why is a river so rich ?

Can you find the mistake in the below statement?

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?

Rearrange the letters in "new door" to make one word.

What does the rebus below mean?

TEN BADTION

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?