Interested to Buy Any Domain ? << Click Here >> for more details...
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?
- 8 Answers
- 20372 Views
- ABC, CTS, IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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 |
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 |
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 |
In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?
The difference between two numbers is 1365. When you divide the larger number with the smaller number the quotient is 6 and remainder is 15. What is the smaller number?
Rearrange MERGANY
If 2*8 = 4, 3*15 = 5, 4*24 = 6, then 5*40 =?
) A rope of given length is used to form a triangle of sides 23, 24, 34 cm. If the same rope is used to form a square, what would be the area of square?
hi..my name is vinaya kulkarni....i have applied for po post in karnataka bank....if anyone knw's the written test pattern please inform me by replyin to my question...my exam is on 4th jan 2009
C1,C2 upto Cn are n cities in a country.There are some roads connecting these cities.They are connected in such a that Crth city has r distinct routes connecting each of the other city in the country. 1)if n=27,then how many roads are there in a country? 2)if n=4,in how many distinct routes,can a person travel from c3 to c2?
In a class , except 18 all are above 50 years. 15 are below 50 years of age. how many people are there a) 30 b) 33 c) 36 d) none of these.
If an object travels at five feet per second, how many feet does it travel in one hour?
7:53::8:?
15 lts of water containing 20% alcohol, then added 5 lts of water. What is % alcohol.
At six o'clock the wall clock struck 6 times . Checking with my watch , I noticed that the time between the first & last strokes was 30 seconds . How long will the clock take to stike 12 at mid night
English 
