Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Can you write down eight eights so that they add up to one thousand?

Can you name some countries which do not have the alphabet 'A' in them?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

What number comes next in the series?

5 15 5 18 5 24 14 20 _

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?