### The average of first five multiples of 3 is:

**A.** 9

**B.** 10

**C.** 8

**D.** 11

## Show Answer

###
Answer-A
Solution-

__Solution(By Apex Team)__

First five multiples of three are:
3, 6, 9, 12, 15.
$\begin{aligned}\text{ Average }&=\frac{3+6+9+12+15}{5}\\
&=\frac{45}{5}\\
&=9\end{aligned}$

$\text { Average }=\Large\frac{3+15}{2}\\
=9$

**Alternate solution:**

$\text { Average }=\Large\frac{3+15}{2}\\
=9$
## Related Questions On Average

### Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average19 people went to a hotel for combine dinner party 13 by 8 runs. His new average is:

A. 20B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18B. 20

C. 24

D. 30

### In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?

A. 10 yearsB. 10.5 years

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### If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is.

A. a = b = cB. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12