There are 9 balls of equal size and same weight(they look
similar) except 1. How many weights required to find the
dissimilar ball using a weighing balance?

Answers were Sorted based on User's Feedback



There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / baljeet singh

minimum 2

Is This Answer Correct ?    26 Yes 7 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / ashok

min 1
max 3

Is This Answer Correct ?    9 Yes 6 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / revathi

two

Is This Answer Correct ?    7 Yes 4 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / ajay

Min 2
Max3
First div into 2grp of5-5 then weight it take that grp which weight is more
Then again divide more weighted grp into 3grp 2 2 1
Then weighed it if equal then took reaming two from three if reaming also equal then reaming only one definitely different
Which is required or we get it earlier any one of the step we get the req different ball

Is This Answer Correct ?    0 Yes 0 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / ashok timothy

1

Is This Answer Correct ?    5 Yes 7 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / sumit bakshi(b.c.roy engg. col

ans:1
At first we divided the 9 balls in two gr. let gr.1 & gr.2 .then simillarly divide gr.1 balls into gr.3 & gr.4.Again gr. 2 balls are divide into gr.5 & gr.6 .Then we get atleast one disimilar ball!

Is This Answer Correct ?    4 Yes 6 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / lava kumar

Max=4;
Min=1;

Is This Answer Correct ?    4 Yes 13 No

There are 9 balls of equal size and same weight(they look similar) except 1. How many weights requ..

Answer / mopurizwarriors

anwer is zero!!

here is the explanation:
first divide the balls into almost two equal groups!
i.e.,5 and 5 balls in 2 groups.
then compare the weights of two groups:
again,divide the first and second groups into almost equal
groups!!(say them as 1,2,3,4 groups,where 1,2 are from first
group and 3,4 are from second group).
let group-1 contains 3 balls and group-2 contain 2 balls
find weights of group-1 and group-2.say x,y
so,average weight of balls in group-2 is x/3.
if 2*(x/3)=y,then that odd ball is not present in first
group(don't confuse group-1 with first group).
so,that odd ball may be present in either group-3 or group-4.
continue,the process until u get groups containing only one
ball.

IN THIS METHOD ,YOU HAVEN'T USED ANY WEIGHTS!!!

SO,THE ANSWER IS:zero

Is This Answer Correct ?    4 Yes 17 No

Post New Answer

More General Aptitude Interview Questions

There are 9 coins. One of 9 is less weighted and others have equal weighed. Find the minimum no of balances to find the defective coin?

0 Answers   Accenture,


What is bull and bear market

2 Answers   eClerx,


THERE ARE 3 MIXTURES WHEN MIXED IN THE RATIO OF 3:4:5 PRICE WAS 240.WHEN MIXED WITH 6:4:9 PRICE WAS 340.WHAT'S THE PRICE WHEN MIXED IN 5:6:8 RATION PRICE IS

0 Answers   CSC,


If a certain computer is capable of printing 4900 monthly credit card bills per hour, while a new model is capable of printing at a rate of 6600 per hour, the old model will take approximately how much longer than the new model to print 10000 bills?

0 Answers   Accenture,


Sir, i want to SBI clerical artitude paper(previous).

0 Answers  






1@2=8,3@5=323,4@5=?

1 Answers  


A store owner decided to raise the price of a particular item by exactly 10%. Of the following which is NOT the new price?

7 Answers   Accenture, TCS,


18.8 * 8.8 * 28.8 can anyone tell simple method to calculate this without normal multiplication?

2 Answers  


If a man can swim downstream at 6kmph and upstream at 2kmph, his speed in still water is: It takes 30 days to fill a laboratory dish with bacteria. If the size of the bactiria doubles each day, how long did it take for the bactiria to fill one half of dish?

0 Answers   Wipro,


In a certain code language ?si re ga? MEANS ?Shyam is smart? and ?pa si ga? means? Animesh is smart?. What is the code for ?smart? in that code language? (a) si (b) re (c) ga (d) pa (e) None of these

7 Answers  


if 2^51 is 8 then 2^48 is ?

3 Answers  


What is difference between NTFS and FAT

5 Answers   Wipro, XP,


Categories