Question

THE APPROXIMAT AVERAGE OF FIRST 15 EVEN NO AND THE FIRST 21 ODD NO IS

Answer 1

Answer:

how to find the average of First 15 Even Numbers?

The below workout with step by step calculation shows how to find what is the average of first 15 even numbers manually.

Step-by-step explanation:

step 1 Address the formula, input parameters & values.

Input parameters & values:

The first 15 even numbers

2, 4, 6, . . . . , 28, 30

step 2 Find the sum of first 15 even numbers

2 + 4 + 6 + . . . . + 28 + 30 = 240

step 3 Divide the sum by 15

240/15 = 16

Thus, 16 is an average of first 15 natural numbers or positive integers.

Answer 2

Answer:

16 and 21

Step-by-step explanation:

the sum of n even numbers is n(n+1)

then sum of 15 even numbers is 15×16

for average..we have to divide sum by total no.of even numbers

then we get (15×16)/15=16

the sum of n odd numbers is n×n

then sum of 21 odd numbers is 21×21

average is (21×21)/21=21