Question
Question: If a, b, c, d are four positive numbers then –...
If a, b, c, d are four positive numbers then –
A
³ 4 
B
³ 4 
C
ba+cb+dc+ed+ae ³ 5
D
All three correct
Answer
All three correct
Explanation
Solution
As A.M. ³ G.M.
dc⋅ed
\
³
c/e = 
(cb+ed) ³ 
Also 5ba+cb+dc+ed+ae ³
³ 1
³ 5
