find the mean of first seven composite number
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composite numbers : A composite number is a positive integer which is not prime the first seven composite numbers are 4,6,8,9,10,12,14
HOW TO FIND AVERAGE : average is nothing but finding mean
mean = sum of observations / no of observations
4+6+8+9+10+12+14 /7
= 63/7
= 9
therefore the average of first 7 composite numbers is 9
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