can anyone provide the answer for the puzzle below
There are 25 horses,in each race only 5 horses can
participate.how many races are required to select best 5
horses out of 25.
need answer with detailed explanation
Answers were Sorted based on User's Feedback
Answer / anand
GROUP THEM INTO 5 AND RACE,PICK THE 5 WINNERS AND RACE THEM
YOU GET THE FASTEST NOW 6 RACES.
YOU HAVE 24 HORSES LEFT 4 TO CHOOSE GROUP THEM IN 5, IN A
GROUP U WILL HAVE 4 PUT THE FASTEST HORSR AND RACE AND PICK
THE 2 FASTEST OF ITS GROUP AND WINNERS OF THE REST AND RACE
THE 5 HORSES.
SO FOR EACH HORSE U NEED 6 RACES 5 HORSES 30 RACES
ANS 30
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / a
Initially 5 horses will participate out of 25. therefore
there are remaining 20 horses for the race.
Now from those five, the best 1 is selected.
now excluding the best one, pick one horse from the
remaining 20, and compete with the 4 failed horses.
again we get the best one among them.(20 races take place)
go on repeating the same thing until all the horses have
competed with each other. Thus, in the end you get 15 best
horses. (this means 15 more races have taken place)
Now again 5 horses will participate from those 15 best
horses. the same procedure is repeated, until you get 10
best horses.(20+15+'10' races took place)
now, those 10 best horses will compete with each other to
get 5 horses. (ie 20+15+10+5 races have taken place)
Meanwhile every horse competes with every other horse...
Races taken place are (20+15+10+5)= 50 races
| Is This Answer Correct ? | 1 Yes | 2 No |
Answer / yogesh hooda
Correct answer is 7.......
dosto bas yehi hai thik answer...ese yahan pe samjhane se
aapko samajh nahi aayega..kafi kuch ulta seedha karna padta
hai...but its true that ans is 7.
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / hemanth
All the above answers are wrong.
Race 25 horses in groups of 5, if the top 5 horses were in
group 1, then all information about the 4th and 5th horses
is lost if you consider only the first three rankers of each
group. Dileep, the question is to identify the top 5, not
the top 3, dont go by Jason Mitchell, these interviewers
have also read the book
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / vicky
racing 25 horses in groups of 5 n selecting the best among
them is wrong.....because,the remaining four horses in each
group can overtake the one which comes first in the other
groups....
according to me,using probability concept of combinations,it
wil be
25!/(20!*5!)
on simplifying,it will be (25*24*23*22*21)/(5*4*3*2*1)
=6375600/120
=5313
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / amit
the answer is 9 races
let the horses be raced as -
race 1 - 1-5
race 2 - 6-10
race 3 - 11-15
race 4 - 16-20
race 5 - 21-25
in race 6, the winners of the 5 racs run, so we get to know
the fastest
the 2nd placed horse from the original race of the winner
can be the 2nd fastest or the 2nd placed horse from race 6
can be the 2nd fastest, so these 2 run in race 7. also for
the 3rd fastest, besides these 2 above horses, the 3rd
placed horse from the original race of the winner can be
the 3rd fastest, the 3rd placed horse from race 6 can be
the 3rd fastest or the 2nd placed horse from the original
race of 2nd finisher in race 6 can be the 3rd fastest. this
gets us the 5 horses which will run in race 7 and we will
get to know the 2nd & 3rd fastest horses
there will be 4 more horses which we will check for being
the 4th fastest, which run the race 8 and 5 more horses
which we check for being the 5th fastest, which run the
race 9 and after race 9, we get the top 5 fastest horses
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / maria nirmal raj
41 races
divide races into 21 and 20
1.in the first 21 races eliminate the last one and add new one form the remaining u wil get the best 4 horses
2.now remove the first place horse and add a new horse form the remaining and repeat the 1 step to get the best 4 horses
3.now add the first place horse in best of 4 horses
NOW U HAVE 5 BEST HORSES TO RACE
| Is This Answer Correct ? | 1 Yes | 2 No |
Answer / karthik.r
5!days needed to select 5 horses form 25horses(each five
combination)
consider a(a1,a2,a3,a4,a5), b(b1,b2,...b5) c
d e are the hourses
'a' alone participate in 5 group of
combination with different combination of 5 hourses(eiter if
it a victor are as a defeat);
In 20 much of horses run in the single
group(because 25 horses are there i am say only 20 horses
remaining 5 hourses are not to repeat).
similarly b,c,d,e horses totaly 120 races
| Is This Answer Correct ? | 1 Yes | 2 No |
Answer / subi
as per the question we have to divide 25 horses in to 5
group and select one best horse from each group ..so i
think only 5 races will be enough to select 5 best horses
out of 25
| Is This Answer Correct ? | 0 Yes | 1 No |
suppose you build a tower interlocking cubes that is 99 cubes high. And suppose you have to paint each square on the tower. How many squares would you have to paint?
A husband and wife have a combined age of 91. The husband is now twice as old as his wife was when he was as old as she is now. How old is wife?
A person is standing at the top of a 100mt building, he has a rope 75mts long and the only way he can come down is through the rope. He can cut the rope also he can tie the rope at any point on the building, but he cant jump and ofcourse dont even think about the stairs :D Find out the best way he'll come down.
14 Answers Compro, Huawei, Oracle, Tech Mahindra,
A man got 30 aples in 1 Rs.Now he want 20% of profit on it. How many apples He should Sell in 1 Rs.??
X is a five letter word.X is a talent in u.if u remove 1st letter X is dead. if u remove 1st 2 letters x is sick.what is X?
There are four groups of Mangoes, Apples and Bananas as follows: Group I : 1 Mango, 1 Apples and 1 Banana Group II : 1 Mango, 5 Apples and 7 Bananas Group III : 1 Mango, 7 Apples and 10 Bananas Group IV : 9 Mango, 23 Apples and 30 Bananas Group II costs Rs 300 and Group III costs Rs 390. Can you tell how much does Group I and Group IV cost?
rich man keeps me in pocket, poor men throws me away, children eat me, am a tamil word _u_ _e_ _l
9 Answers Adama Agricultural Solutions, Infosys, Mannar Company, Wipro,
Solve this Murder case (challenge).. A man was found murdred on 02/10/2010 wednesday afternon at 2:10pm in his house...... His wife called police.. Police questioned everyone.. Wife: I was sleeping.. Neighbours: We went 4 the marriage.. Driver: I went to Bank.. Cooker: I went to Market.. Watch Man: I went to My relations Marriage.. Police arrested murderer immediately.. Who was it? "Reply if u r briliant with correct reason"
There are numbers from 1 to n, which are inverted such that it results in numbers from n to 1. If only two consecutive numbers are stampled at a time and are inverted, how many moves are required?
7 Answers Persistent, Soliton, Soliton Technologies,
Three containers are of 15,10 and 6 ltrs capacity. Initially its in configuration (15,0,0). Make it to configuration (2,8,5).
Can u pl send me the model question paper or previous 5 year question paper for South Indian Bank's clericl post.Pl do send it to my mailId:nan_april4@yahoo.co.in
ek cricket match chal raha he jitne ke liye 7 ball me 3 runs lag rahe he. dono batsman ke runs he 94and 94. 3 balls me se koi bhi whide,extra, noball nahi gira.fir bhi dono batsman ne centuri puri ki.aur teem match jeet gayi. to dono batsman ne apni centuri puri ki kese?