If a wheel has 54 spokes, how many spaces are there between the spokes?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

The centre of the third figure is empty. What digit should fit inside?

Can you write down eight eights so that they add up to one thousand?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Complete the table series riddle by finding the number that can replace "??".

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

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.