Question 900777
Let x to be the first term (number) in five consecutive even numbers.
First number = {{{x}}}
Second number = {{{x + 2}}}
Third number = {{{x + 4}}}
Fourth number = {{{x + 6}}}
Fifth number = {{{x + 8}}}

{{{Mean=Sum Of Numbers/Number Of Terms Of The Numbers}}}
{{{16=(x+(x+2)+(x + 4)+(x + 6)+(x + 8))/5}}}
{{{16=(5x+20)/5}}}
{{{80=5x+20}}}
{{{60=5x}}}
{{{60/5=x}}}
{{{12=x}}}
{{{x=12}}}
First number = x = 12 (which is the least number in five consecutive even numbers)
*This question is done.*
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Let say the question is modified and become "If the mean of five consecutive odd numbers be 16, what is the least number?"

Let x to be the first term (number) in five consecutive odd numbers.
First number = {{{x + 1}}}
Second number = {{{x + 3}}}
Third number = {{{x + 5}}}
Fourth number = {{{x + 7}}}
Fifth number = {{{x + 9}}}
{{{Mean=Sum Of Numbers/Number Of Terms Of The Numbers}}}
{{{16=((x + 1)+(x+3)+(x + 5)+(x + 7)+(x + 9))/5}}}
{{{16=(5x+25)/5}}}
{{{80=5x+25}}}
{{{55=5x}}}
{{{55/5=x}}}
{{{11=x}}}
{{{x=11}}}
First number = x = 11 (which is the least number in five consecutive odd numbers)