Given:
The average of even numbers between 21 and 45.
Formula used:
Average = Sum of Observation/Number of Observation
Solution:
The average of even numbers between 21 and 45.
Even Number = 22, 24, ........, 44
Sum of Even Number = 22 + 24 + 26 + ........ + 42 + 44
⇒ 396
Number of Observation = 12
Average = 396/12
⇒ 33
∴ The average of even numbers between 21 and 45 is 33.
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