Find the missing number in the sequence below:

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I can write cow in 13 letters.

Can You?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you start the fire using two pieces of wood?

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Can you count the number of lines in the below picture?