Question

Add first 15 natural numbers and find the average? Solution with formula?

Answer 1

Good morning ☕️

Answer:

8

Step-by-step explanation:

the formula : (sum of 15 consecutive term of an arithmetic sequence)

$1+2+3+...+15=\frac{15*(15+1)}{2} =\frac{15*16}{2}=15*8$

Now,

$Average=\frac{15*8}{15} =8$

Answer 2

Answer:

120

Step-by-step explanation: