I can write cow in 13 letters.

Can You?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Can you solve the maths in the below-given picture equation?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What has no start, end, or centre?

How many times do a clock's hands overlap in a day ?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

As you can see in the picture, you have a hole with dimensions 9 ft x 2 ft Also available is a wooden board with dimensions 6 ft x 3 ft Now you have to cover the hole with this board and you are allowed to cut the board into two pieces. Please see that the hole is completely covered and the boards should not overlap or extend beyond the edge. How will you cut the board?