3 years ago

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

Mathematics

2 answers:

NeTakaya3 years ago

7 0

Good morning ☕️

Answer:

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,

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

kicyunya [14]3 years ago

5 0

Answer:

120

Step-by-step explanation:

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----------------------

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