Question

What number lies in between 18 and 24

Answer 1

Answer: 21

Explanation:

18, 19, 20, 21, 22, 23, 24

1 2 3 3 2 1

21 is in the middle

Answer 2

21

Explanation:

24 - 18 = 6

6/2 = 3

18 + 3 = 21