There are 8 balls that look identical. One of them weighs
less than the others. Given a weighing scale, how will you
find this ball.
Answer Posted / ganesh karki
Hi friends this is ganesh karki from Uttarakhand!!!!!!
I am giving you the right answer with right question.
Actually Question is this->
There are 8 balls that look identical. One of them weighs
less than the others. Given a weighing scale, how will you
find this ball with minimum no of weighing.
total balls = 8
divided 8 balls into 3 parts
1st part having 3 balls
2nd part having 3 balls
3rd part having 2 balls
now we know 7 balls are identical and 1 ball is diffrent in weight.
so step 1 -> take 2nd parts(3 balls) on one side of scale and 3rd parts(3 balls) on other side of scale.
(i)if both are same then left the 6 ball from the list.then go to step 2(ii).
(ii) if both parts are diffrent then take the minimum weight parts.then go to step 2(i).
step 2 -> (i)take 1 ball on one side of scale and 1 ball on other side of scale and 1 ball in hand.
(a) if both are diffrent then take the less weight ball. left the othe 2 ball from list.
(b)if both are same then the ball which is in hand is the minimum weighted ball.
(ii) take 3rd part having 2 balls weight and find the minimum weighted ball.
So there are only 2 number of weighing step.
NOTE: weight sequence are 1st part and 2nd part then 3rd part.
All are satisfy with my answer plz give me ur reply.
august 16,2010.
thanks
Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
Concentrations of three wines A, B and C are 10, 20 and 30 percent respectively. They are mixed in the ratio 2 : 3 : x resulting in a 23% concentration solution. Find x.
I was married 10 years before my wife was sixth member of my family and now I have a baby and today father died and the average age of my family was same as it was 10 years before. Find my father's age when I was married?
debentures book building
. Which of the following is not a VSAM dataset. a. KSDS b. RRDS c. LSDS d. ESDS
(998-1)(998-2)(998-3).....(998-n)= ? when n>1000
If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is?
Placement aptitude questions pattern in oyo rooms
Find the next number in the series 12,21,,112,121,122---
What is the perimeter of the quadrilateral?
Find the next series of 1,2,2,4,8,?
Complete the series 2, 7, 24, 77,__ (hint: 2*12= 24, 7*11= 77, therefore 24*10=
x + 4 y relation between x and y is x/2y = 3/2 ie x = 3y find the x -2y ratio
A sales person multiplied by a number and get the answer 3. Instead of that number divided by 3. What is the answer she actually has to get. (1/3) * 1 *3 =3 so the no= 1 divided by three.
in a city, there are 100 buildings numbered by corporation between 0-100, how many twos are shown in door,
A says “the horse is not blackâ€. B says “the horse is either brown or grey. “C says “the horse is brown†At least one is telling truth and at least one is lying. What is the color of the horse?