What will be average of all the odd numbers between 8 and 32?

21 18 20 19

20

First odd number b/w 8 & 32 = 9 Last odd number b/w 8 & 32 = 31 Average = \(\frac{First \;term \;+\; Last \;term }{2}\) = \(\frac{9 + 31 }{2}\) = \(\frac{40}{2}\) = 20