Question

Find the mean of the first 10multiple of 3.

a.

16.5

b.

23

c.

13

d.

14.5

​

Answer 1

Answer:

a) first 10 multiples of 3 are 3,6,9,12,30.

This is an AP with a=3, n=10, and I=30.

therefore sum=n2(a+I) =102.(3+30)=165.

Therefore mean,`x =16510 =16.5.

Step-by-step explanation:

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