If C is a whole number, C+1 is a whole number after that. If A is a whole number, what is a whole number before that?  Choose the most appropriate option.
A) 7  B) 1  C) 2  D) 3  E) 0
We know that the number ‘0’ together with the natural numbers gives us the numbers 0, 1, 2, 3, 4, 5, …………… which are called whole numbers.   If A is a whole number and it is greater than 0 then the whole number before that is A – 1, which will always be a whole number.   Again, when A is a whole number and it is equal to 0 then the whole number before that is A – 1 which means 0 – 1 = -1, which is not a whole number.   Therefore, if A is a whole number then the number before that will not always be a whole number.   Answer:1
<result>B</result>
If C is a whole number, C+1 is a whole number after that. If A is a whole number, what is a whole number before that?