Question

FIND the average of the even no.between 21 to 51 ​

Answer 1

Answer:

=540

Step-by-step explanation:

152[(2×22)+(15−1)2]=152[72]=152[(2×22)+(15−1)2]=152[72]

15×36=54015×36=540

Answer 2

Answer:

18

Step-by-step explanation:

Because sum of even numbers from 21 to 51 is 540 and the average is 18 ☺️