1)

The minimum value of the sum of real numbers a5,a4,3a3,1,a8 and a10 with a >0 is 


A) 2

B) 4

C) 8

D) 5

Answer:

Option C

Explanation:

Using AM GM

a5+a4+a3+a3+a3+1+a8+a108

 (a5.a4.a3.a3.a3.1.a8.a10)1/8

  a5+a4+3a3+1+a8+a108.1

 Hence, minimum value is 8