Question

If arthmetic mean a-1, a+5, a+11 and a+ 17 is 10 then the value of is

Answer 1

Answer:

2

Step-by-step explanation:

a-1 , a+5, a+11, a+17

mean = sum of all observations / no. of observations

Mean=

             [tex]\frac{a-1 + a+5+a+11+a+17}{4}\\ \frac{4a+32}{4}\\ a+8=10\\ a=2[/tex]