Sponsor Area
Permutations And Combinations
Question
If two G.M.'s 
and one A.M. 'A' be inserted between two numbers, show that 
Solution
Let a and b be two numbes, since g1 and g2 are two G.M.'s between a and b.
∴ a, 
, b are in G.P.
Let r be common ratio
∴ 
Since A is the A.M. between a and b
∴ 
2A = a + b ...(i)
R.H.S. = 
{By using (i)}
= L.H.S.
Some More Questions From Permutations and Combinations Chapter
Sponsor Area
Mock Test Series
Mock Test Series