If m is the average (arithmetic mean) of the first 10 positive multiples of 8 and if M is the median of the first 10 positive multiples of 8, what is the value of M – m ?  Choose the correct choice from the following answers
A) –5	B) 24	C) 5	D) 25	E) 5
The first 10 positive multiples of 8 is an evenly spaced set. One of the most important properties of evenly spaced set (aka arithmetic progression) is:in any evenly spaced set the arithmetic mean (average) is equal to the median.   Hence M=m --&gt; M-m=0.   Answer: 5.
<result>E</result>
If m is the average (arithmetic mean) of the first 10 positive multiples of 8 and if M is the median of the first 10 positive multiples of 8, what is the value of M – m ?