Question

Find the mean and median of first 12 odd composite munbers

Answer 1

hello friend : - ) 
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according to your question we need to find the mean and median of first 12

odd composite numbers .

first i will tell you what are composite numbers => A whole number that can be

divided evenly by numbers other than 1 or itself. Example: 9 can be divided

evenly by 3 (as well as 1 and 9), so 9 is a composite number. But 7 cannot be

divided evenly (except by 1 and 7), so is NOT a composite number (it is a

prime number).

So we can say that first 12 odd composite numbers are => 9  ,15 , 21 , 25, 

 27 , 33 , 35 , 39 , 45 , 49 , 51 ,55 

now we will find mean of first 12 odd composite numbers : - ) 
                        ======

                     sum of all numbers
MEAN =>     -------------------------
                        total numbers 
which means , 

mean of first 12 odd composite numbers =>                                                                    
                         9+15+21+25+27+33+35+39+45+49+51+55 
                        --------------------------------------------------------------- {  = >  33.6 
                                                      12  
so here we got its mean which equals to = > 33.6 now ,  we will calculate the 

median of first 12 composite numbers : -)

As we know that 12 is even so here are 2 middle numbers in the series of first

12 odd composite numbers and those numbers are 33 and 35 

so here we got the median = >     
                                                                   (m +n)                                                  
    median for even digit numbers = >   ------------                                                                                                                                   2 
 
                                                                33+35
           here we got the median          ------------- => 34 
                                                                    2 

median of the first 12 odd composite number is 34 

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HOPE THIS HELPS YOU ! 

@ ENGINEER GOPAL !
 
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