Answer / venniraisundar

divide the 8 balls into 2 sets such that each set contains 4
balls. Weigh both the sets. Now the set which weighs less is
again divides into 2 sets such that each set will contain 2
balls.Now weigh these 2 sets and again the set which weighs
less will be divided into 2 sets with one 1 ball each.Now if
you weigh you can find out the ball which weighs less than
the rest.

Answer / muhammad akram

hi i m ch akram from kabirwala,,,,,,,,,,


total balls=8
separate 2 balls from them
put 3 balls from remaining 6 in one side of scale and 3 in
other side. now there r two possibilites
1- that both sides equal
2- not equal
if both sides r equal then put the initially separated 2
balls in two sides of scale that we find the less weight
ball
if both sides r not equal then take the 3 balls of less
weight AND separate one ball from these 3 balls and put
remaining 2 balls in two sides of scale, if agan the scale
is equal then the 3rd separated ball in of less weight,and
if the scale is not equal u will find the less weight ball
directly

Answer / bharat

in caswe there are odd balls leave a ball out and weigh the
remaining balls dividing them into 2 sets if the weights are
equal then the ball left out is the odd man out or take the
set with least weight and divide it further and continue.

Answer / parth

i think in case of odd ....

make 3 sets for eg - if there are 9 balls ,make three sets
of 4 ,4 and 1 balls.

now weigh the sets having 4 balls(i.e.1st and 2nd),if weigh
comes equal then the least weight ball is the ball of 3rd set.

if weigh are not equal then we"ll come to knoe that the 3rd
set ball is not the least 1,thus now we are left with 8
balls,now the set which weigh less divide it into 2 parts
,further weigh them ,now we left with 2 balls,finally weight
them will get the least weigh ball

Answer / prabu.m

hi i'm m.prabu from attur
divide the 8 balls in to 4 sets
first check that 2 sets are equal
if eqaul
{
leave the both sets and try from the other two sets
and check which pair is less weight and next divide the
set and choose the correct by picking the less weight ball
}
if both are not equal
{
then leave the sets that are not weighted
pick the set with least weight and divide by two measure
weight and took the least one
}

Answer / bhargav kesavan

Keep all the balls in a row, blow one by one, whichever
balls rolls quickly, shout loudly

"THIS IS THE LESS WEIGHED BALL"

Answer / venniraisundar

Incase of odd number of balls...........

Tk for ex there r 7 balls and of that one ball is of less
weight, Now weigh the 1st 3 balls and note down the weight,
weigh the 3rd, 4th and 5th ball and again note down the
weight then weigh 5th 6th and the 7th ball and note down its
weight. Since only one ball is of less weight , Of the three
sets weighed the set wit less weight will contain that ball.
Now tk tht particular set and repeat the same
procedure,weigh the 1st 2 balls then the 2nd and 3rd
ball,again of the 2 sets one with least weight will contain
the ball with least weight. Tk that particular set and weigh
the 2 balls. U vl identify the ball with least weight.


One more answer is that since they have not specified the
number of trails for weighing the balls, U can weigh every
ball seperately and also identify the ball with least weight.

Answer / guest

In two ways,first divide 3,3,2 balls.And put three balls one
side other three balls on other side,if the two pans same
weight,then select other two balls and weighing the ball
less weight pan riseup

Answer / 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

Answer / abhilasha

put all the balls on the weighing scale at once.
remove one ball note the weightloss n mark that ball and put
it back wid the other balls on the scale.
remove second ball note the weightloss n mark that ball n
put it back.
continue for all the balls till u find a weightloss that is
lesser than the normal weightloss observed.

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A man engaged a servant on a condn that he’ll pay Rs 90 and also give him a bag at the end of the yr. He served for 9 months and was given a turban and Rs 65. So the price of turban is i. Rs 10 / 19 / 0 / 55 22. Three wheels make 36, 24, 60 rev/min. Each has a black mark on it. It is aligned at the start of the qn. When does it align again for the first tym? 14/20/22/5 sec 23. If 1= (3/4)(1+ (y/x) ) then i. x=3y ii. x=y/3 iii. x=(2/3)y iv. none 24. The sum of six consecutive odd nos. is 888. What is the average of the nos.? i. 147 ii. 148 iii. 149 iv. 146 25. 1010/104*102=10? i. 8 ii. 6 iii. 4 iv. none Section B Direction for Qn 1-8 Ans A using I only Ans B using II only Ans C using both I and II Ans D not solvable 1. Raman and Gaurav Brought eggs from a vendor. How many eggs were bought by each of them i. Raman bought half as many as Gaurav ii. The dealer had a stock of 500 eggs at the beginning of day 2. What is the age of Ramprakash? i. Ramprakash was born when his father was 26 yrs old ii. Ramprakash’s mothers age is 3yrs less than his father’s 3. How much time is reqd for downloading the software? i. The Data transfer rate is 6 kbps ii. The size of the software is 4.5 megabytes 4. Sanjay and Vijay started their journey from Mumbai to Pune. Who reached Pune first? i. Sanjay overtakes two times Vijay and Vijay overtakes Sanjay two times ii. Sanjay started first 5. Is the GDP of country X higher than Country Y? i. GDP’s of X and Y has been increasing at a compounded annual growth rate of 5% and 6% over he past 5 yrs ii. 5 yrs ago GDP of X was 1.2 times Y 6. A boat can ferry 1500 passengers across a river in 12 hrs. How many round trips does it make during the journey? i. The boat can carry 400 passengers at a time ii. During its journey, the boat takes 40 mins time each way and 20 mins waiting time at each end. 7. What are the values of m and n? i. n is an even integer, m is odd integer and m is greater than n. ii. The product of m and n is 30 8. How much is the weight of 20 mangoes and 30 oranges? i. 1 orange weighs twice that of 1 mango ii. 2 mangoes and 3 oranges weigh 2 kg Direction for Qn 9-12 Five teams participated in Pepsi Cup. Each team played against each other. The top teams played finals. A win fetched 2 pts and a tie 1 point 1) South Africa were in the finals 2) India defeated SA but failed to reach the finals 3) Australia lost only one match in the tournament 4) The match between India and Sri Lanka was a tie 5) The undefeated team in the league matches lost in the finals 6) England was one of the best teams that did not qualify 9. Who were the finalists? i. SA & India ii. Aus & SL iii. SA & SL iv. none 10. Who won the finals? i. Aus ii. SL iii. SA iv. Can’t be determined 11. How many matches did India Win? i. 0 ii. 1 iii. 2 iv. can’t be determined 12. What was the outcome of the India England Match i. India won ii. England won iii. It was a tie iv. Can’t be determined Direction for Qn 13-14 These qns are based on situations given below: 7 Uni crick players are to be honored at a special luncheon. The players will be seated on a dais along one side of a single rectangular table. A and G have to leave the luncheon early and must be seated at the extreme right end of table, which is closest to exit. B will receive Man of the Match and must be in the centre chair C and D who are bitter rivals for the position of Wicket keeper dislike one another and should be seated as far apart as possible E and F are best friends and want to seat together. 13. Which of the foll may not be seated at either end of the table? i. C ii. D iii. G iv. F 14. Which of the foll pairs may not be seated together? i. E & A ii. B & D iii. C & F iv. G & D Direction for Qn 15-18 An employee has to allocate offices to 6 staff members. The offices are no. 1-6. the offices are arranged in a row and they are separated from each other by dividers>hence voices, sounds and cigarette smoke flow easily from one office to another Miss R needs to use the telephone quite often throughout the day. Mr. M and Mr. B need adjacent offices as they need to consult each other often while working. Miss H is a senior employee and his to be allotted the office no. 5, having the biggest window. Mr D requires silence in office next to his. Mr. T, Mr M and Mr. D are all smokers. Miss H finds tobacco smoke allergic and consecutively the offices next to hers are occupied by non-smokers. Unless specifically stated all the employees maintain an atmosphere of silence during office hrs. 15. The ideal candidate to occupy office farthest from Mr. B will be i. Miss H ii. Mr. M iii. Mr. T iv. Mr. D 16. The three employees who are smokers should be seated in the offices i. 1 2 4 ii. 2 3 6 iii. 1 2 3 iv. 1 2 3 17. The ideal office for Mr. M would be i. 2 ii. 6 iii. 1 iv. 3 18. In the event of what occurrence within a period of one month since the assignment of the offices would a request for a change in office be put forth by one or more employees? i. Mr D quitting smoking ii. Mr. T taking over duties formally taken care of by Miss R iii. The installation of a water cooler in Miss H’s office iv. Mr. B suffering from anemia Direction for Qn 19-20 A robot moves on a graph sheet with x-y axes. The robot is moved by feeding it with a sequence of instructions. The different instructions that can be used in moving it, and their meanings are: Instruction Meaning GOTO(x,y) move to pt with co-ord (x,y) no matter where u are currently WALKX(P) move parallel to x-axis through a distance of p, in the +ve direction if p is +ve and in –ve if p is –ve WALKY(P) move parallel to y-axis through a distance of p, in the +ve direction if p is +ve and in –ve if p is –ve 19. The robot reaches point (5,6) when a sequence of 3 instr. Is executed, the first of which is GOTO(x,y) , WALKY(2), WALKY(4). What are the values of x and y?? i. 2,4 ii. 0,0 iii. 3,2 iv. 2,3 20. The robot is initially at (x.y), x>0 and y<0. The min no. of Instructions needed to be executed to bring it to origin (0,0) if you are prohibited from using GOTO instr. Is: i. 2 ii. 1 iii. x + y iv. 0 Direction for Qn 21-23 Ten coins are distr. Among 4 people P, Q, R, S such that one of them gets a coin, another gets 2 coins,3rd gets 3 coins, and 4th gets 4 coins. It is known that Q gets more coins than P, and S gets fewer coins than R 21. If the no. of coins distr. To Q is twice the no. distr. to P then which one of the foll. is necessarily true? i. R gets even no. of coins ii. R gets odd no. of coins iii. S gets even no. of coins iv. S gets odd no. of coins 22. If R gets at least two more coins than S which one of the foll is necessarily true? i. Q gets at least 2 more coins than S ii. Q gets more coins than P iii. P gets more coins than S iv. P and Q together get at least five coins 23. If Q gets fewer coins than R, then which one of the foll. is not necessarily true? i. P and Q together get at least 4 coins ii. Q and S together get at least 4 coins iii. R and S together get at least 5 coins iv. P and R together get at least 5 coins Direction for Qn 24-25 Elle is 3 times older than Zaheer. Zaheer is ½ as old as Waheeda. Yogesh is elder than Zaheer. 24. What is sufficient to estimate Elle’s age? i. Zaheer is 10 yrs old ii. Yogesh and Waheeda are both older than Zaheer by the same no of yrs. iii. Both of the above iv. None of the above 25. Which one of the foll. statements can be inferred from the info above i. Yogesh is elder than Waheeda ii. Elle is older than Waheeda iii. Elle’s age may be less than that of Waheeda iv. None of the above

1 Answers  

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