Question

12, a, 6, 8, 2, 14

The average (arithmetic mean) of the numbers listed above is 6. What is the value of a?

a) -36 c) 0 e) 36
b) -6 d) 6

Answer 1

I think your answer is

D (6)

hope it's help

have a great day

Answer 2

Given,
Arithemetic mean a=6

But arithmetic mean of given no: is = (12+a+6+8+2+14)/6
=(42+a)/6

→6=(42+a)/6
→36=42+a
→a=36-42
→a=(-6)


So (b) is your answer....

Hope it Helps...
Regards...
Leukonov.