When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Can you solve this picture maths equation?

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

How Come ??

What is the last thing you take off before bed?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Can you find a number that lies one third of the distance between 1/3 and 2/3?