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

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Sharpest vision can find the lamp in the desert. Are you one of them? Test your observation skills now!

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I add 5 to 9 and get 2. The answer is correct, so what am I?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Can you move two match sticks to make it 430?

Can you count the number of triangles inside a triangle?

What number divided by 4 is the same as that number minus 4?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?