hi friends

this was asked in satyam's placement paper recently!

(even i dont know the ans!I asked from many, but no one solved it!)I hop this geek members will help me solve the series. PLZ REPLY WITH PROPER EXPLAINATION!


Find the next two terms!


4, 2, 3, 7.5, 26.25, -------- , ----------!


bye

__________________
:)
NEVER SAY DIE.

Its very easy.....

Next numbere in this series is:

4,2,3,7.5,26.25, 118.125,650.375

Explanation:

4 x 0.5 = 2
2 x 1.5 = 3
3 x 2.5 = 7.5
7.5 x 3.5 = 26.25
26.25 x 4.5 = 118.125
118.125 x 5.5 = 650.375

--------------------
suresh

It’s really good the way you solve such problems 'psuresh', it always interests and impresses me.

But I think there is a solution or formulae for it right? Or you had to do it on a trial and error basis which takes a long long time? I mean how you have come to know that the previous number is multiplied with 1+ the previous multiplier?

__________________
Lack of WILL POWER has caused more failure than
lack of INTELLIGENCE or ABILITY.

-sutnarcha-

hi suresh

Thankx for helping!Also plz tell me took how much time u took to solve it?if u solved it in a min or two ,then like "sutnacharya" asked ,do u have any fromulas etc.Anyway i feel u solve puzzles well!
bye

__________________
:)
NEVER SAY DIE.

hi friends,

it will take only five minutes.....

Intially i found the series going multiply the numbers or divide the numbers....

Because the second number only going down and all the numbers going up. Also the numbers have fractional part.

First i analys the difference between the two numbers. After i got the solution easily....

Just i thinking logically...I am not using any mathematical formula and methods.

--------------
suresh

take any two consecutive values, a and b and calculate

((a+b)*b)/a