Question

Four alternative options are given for the following statement. Select the correct option from it: The mean of first three multiples of 5 is :A. 5 B. 10 C. 15 D. 30

Answer 1

First three multiples of 5 are -
5, 10,and 15.
So, the mean of first three multiples of 5 are
= (5+10+15) / 3
= 30/3
= 10
Thus, B is the correct option.

Answer 2

We know,
First three multiples of 5 are 5 , 10 , 15 .


And, from the properties of statics, we know : -

Mean = ( sum of observations ) / ( number of observations )


Then,
Sum of first three multiples of 5 = 5 + 10 + 15 = 30

Total number of multiples = 3



Therefore,
Mean of first three multiples of 5 = ( 30 / 3 )

Mean of first three multiples of 5 = 10


Hence,
Option C is the correct option.
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