brain teaser again.................?

if u r given 'n' rods of length{1,2,3,4.....n} respectively.

what is the maximum no. of triangles that can be formed using these rods at a time?

one rod can be used only once.........

for example if n=5 , the max. no. of triangles formed will be 1..........using the combination(3,4,5)

so once again read it carefully....

you cant use one rod more than once

suppose n=5 ,then the answer is 1

using combination(3,4,5) or (2,3,4)

if u r using rod "3" in one combination

you cant use it in another combination..

in other words you have to show all your combinations keeping them on a table at a time....and you have to exploit maximum no. of rods possible

for simplicity try to device a method for n=100 and generalise it for n.....

hope you all understand the question better now.........