There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What always comes into a house through the keyhole?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

Can you find the 09 errors in the picture below?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

81 x 9 = 801. What must you do to make the this equation true?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

I am an odd number. Take away a letter and I become even. What number am I?

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

How is this possible?