Aptitude Skype Questions And Answers 1. Question: What are Natural Numbers ? Answer: A Natural number is a whole number that we use for counting. They have an order that we learn when we are very young. one, two, three Example: Sometimes called counting numbers are 1,2,3,4 and so on. The numbers that we count with 1,2,3,4........................ 2. Question: What are Even numbers ? Give example. Answer: Any number that can be exactly divided by 2 is called as an even number. even numbers always end up with the last digit as 0,2,4,6 or 8 some examples of even numbers are 2,4,6,8,10,12,14,16 3. Question: What are Odd Numbers ? Give Examples. Answer: A whole number that is not able to be divided two into two equal whole numbers. Example: The numbers 1,3,5 and 7 are odd numbers. 4. Question: What are Prime Numbers ? Give Examples. Answer: Prime numbers are those numbers which are divided for itself. Prime numbers are the numbers that have only two factor, that are,...