Question

Find the mean of the first five pair of composite numbers.​

Answer 1

Composite numbers are the numbers that have at least one divisor other than 1 and itself. So, the first five composite numbers are: 4, 6, 8, 9, 10 as all these numbers have smaller positive integers as their factors and thus have at least one divisor other than 11 and themselves.

Now, we have to calculate the mean of the numbers: 4, 6, 8, 9, 10.

Mean of n observations can be calculated easily by using the formula X¯=∑xinX¯=∑xin where xixi’s are the observations and n is the total number of observations. In other words, the mean of n observations can be calculated by simply adding all the numbers and then dividing their sum by the number of observations, n.

Now, 

X¯=(4+6+8+9+10)/5

Doing the calculations and simplifying further, we get,

⇒X¯=37/6

So, the mean of first five composite numbers is 7.4

Answer 2

Answer:

Hence, MEAN OF FIRST FIVE COMPOSITE NOS IS 7.5.

Hope it helps uh