Question

Average of odd numbers between 2 and 20?​

Answer 1

Answer:

3+5+7+9+11+13+15+17+19/2

99/2

49.5

Answer 2

The odd numbers between 2 and 20 are 3, 5, 7, 9, 11, 13, 15, 17, 19 when 11 is the middle number of the sequence.
There is an equal distance between every odd number so the mean and median must then be the same.

An odd number is a natural number not divisible by 2.

An even number is a natural number divisible by 2.

So there is only 1 natural number  between two even numbers.

Natural numbers divide by 1.

So only natural numbers qualify as even or odd numbers.