Question

Find the average of first 25 multiples of 3 without doing Arithmetic progression

Answer 1

Answer:

39

Step-by-step explanation:

First multiple=3

25th multiple of 3=25*3=75

so average=(3+75)/2

=78/2

=39

Answer 2

The average of first 25 multiple of 3 is 39.

Step-by-step explanation:

Since we have given that

25 multiples of 3 without doing Arithmetic progressions:

3,6,9,...................75

So, the average of first 25 multiples of 3 would be

$\dfrac{3+75}{2}\\\\=\dfrac{78}{2}\\\\=39$

Hence, the average of first 25 multiple of 3 is 39.

# learn more:

In an arithmetic progression first term is 7 common difference is 3 find the nth term of an arithmetic progression​

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