Question

Between the numbers 2 and 20, 8 arithmatic means are inserted, then their sum is

• A. 88
• B. 44
• C. 176
• D. None of these

Answer 1

The correct option is A 88

Let $a,A_1,A_2....A_g,bϵA.P$
Where a = 2, b = 20, n =8
$\therefore sumofthemeans=\frac{n}{2}(a+b)=\frac{8}{2}(2+20)=88$