Question

Average of all odd number between 20 and 40 is

Answer 1

Answer:

30

Step-by-step explanation:

Odd numbers between 20 and 40 is

21, 23, 25, 27, 29, 31, 33, 35, 37, 39.

Average of all odd numbers is

$\frac{sum \: of \: all \: observaions}{total \: nubember \: of \: observations}$

sum of all observations is =

21+23+25+27 +29 +31+33+35+37 +39= 300

No.of observations=10

$= \frac{300}{10} \\ 30$