A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Solve the equation in the image by looking at the pattern closely.

What is the fastest way to double your money?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Can you spot the man between the coffee bean in the picture below ?