Question

find the average of 15,17,19,21 .​

Answer 1

average of 15, 17, 19, 21 =

=(15 + 17 + 19 + 21)/4

= 72/ 4

= 18.

hope it helps you...

Answer 2

Answer:

The average of given numbers is 18.

Q. What is average?

Ans. The mean of the given numbers is known as average. Its formula is

sum of given numbers/total number of given numbers.

Step-by-step explanation:

• 1st we'll add the given numbers.
• 15+17+19+21=72
• Then we've to divide the sum of the given numbers by total given numbers. i.e. dividing 72 by 4 cuz 4 numbers are given.
• 72/4=18.

Hence, the answer to your question is 18.

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