Question

find average of odd numbers between 20 and 30​

Answer 1

Answer:

25

Step-by-step explanation:

a = 21

L = 29

n = 5

As we've to find the average,

First we'll find the sum and divide the result by 5.

Using the formula,

$\tt{S_n = n (a + L)/2}$

= 5 × ( 21 + 29 ) / 2

= 5 × 50/2

= 5 × 25

= 125

Average = Sum of all numbers / Total numbers

= 125/5

= 25

Thus, average of odd numbers between 20 and 30 is 25.

Answer 2

Answer:

Average = Sum/No. of terms

= (21 + 23 + 25 + 27)/5

= 125/5

= 5