Question

How many elements are in the set {whole numbers between 3 and 15}? 11 12 13

Answer 1

Let S be the set of whole numbers between 3 and 15 then S={3,4,5,6,7,8,9,10,11,12,13,14,15} so How many elements are in the set ? just count them..

Answer 2

Whole numbers between 3 and 15 are given by:

{4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}

Therefore, to answer the question, what we must do is to count the number of whole numbers that we have inside the set.

We note that, without including number 3 and including number 15, the number of integers is equal to 11.

Answer:

There are 11 elements in the set of whole numbers between 3 and 15.