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TCS 2010 PUZZLES







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#1 LogeshR






Posted 01 September 2010 - 07:00 AM

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1.A triangle is made from a rope. The sides of the triangle are A cm, B cm and C cm. (I do not remember the numerical value). What will be the area of the square made from the same rope?

2.There is a bacteria which has the probability of die 1/3 of its total number or it may tripled. Find out the probability
A. P=1/3+(2/3*p^3)
B. P=2/3+(2/3*p^3)
C. P=2/3+(1/3*p^3)
D. P=2/3+(2/3*p^3)
I marked it as A. check it out


3.23 men shake hand with each other in a party. Maximum no of handshakes without cyclic handshakes.

4.There are two tanks A,B. A will be fill up 1ltr in one hour. B tank will fill up double in every hour (like 10, 20, 40, 80, 160…..). if the tank B is filled 1/16 in 13 hours how much time it will take to fill up totally.

5.The ages of two friends is in the ratio 5:6. After how many years will the ages be in the ratio 7:8?

6.In a question ,last part has ,the ages of two people has the ratio of 6:6 and by adding the numbers we get 44,after how many years the ratio would be 8:7? Ans:



#2 shashank sharda

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Posted 06 September 2010 - 07:53 PM

the first one is really vry simple....here's d soln.perimeter of traingle should b equal to perimeter of square as the rope used is same.so, A+B+C= 4x (let x be length of square's side)therefore, x=(A+B+C)/4area of square = x.x = (A+B+C)/4 . (A+B+C)/4 i.e. ur ans.

#3 shashank sharda

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Posted 06 September 2010 - 08:23 PM

Question no.3 it is analogous to a network topology question ....like what is the no. of connections needed in a full-mesh type of network , where no. of node =23 ??in a full mesh, no og connections = (n.n-n)/2=(23.23-23)/2= (529-23)/2 = 506/2 = 253

#4 jitendra.shahare

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Posted 07 September 2010 - 03:43 AM

4.There are two tanks A,B. A will be fill up 1ltr in one hour. B tank will fill up double in every hour (like 10, 20, 40, 80, 160…..). if the tank B is filled 1/16 in 13 hours how much time it will take to fill up totally.

ans ...good questions...
logesh boss..if u r asking abt B tank then it will take 17 hrs to fill up totally.
13th hrs tank B filled 1/16
14th hrs tank B filled (1/16)*2=2/16 like this
15th hrs tank B filled 4/16
16th hrs tank B filled 8/16
17th hrs tank B filled 16/16 so ans will b 17 hrs


#5 LogeshR

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Posted 07 September 2010 - 07:07 AM

4.There are two tanks A,B. A will be fill up 1ltr in one hour. B tank will fill up double in every hour (like 10, 20, 40, 80, 160..). if the tank B is filled 1/16 in 13 hours how much time it will take to fill up totally.

ans ...good questions...
logesh boss..if u r asking abt B tank then it will take 17 hrs to fill up totally.
13th hrs tank B filled 1/16
14th hrs tank B filled (1/16)*2=2/16 like this
15th hrs tank B filled 4/16
16th hrs tank B filled 8/16
17th hrs tank B filled 16/16 so ans will b 17 hrs


Thank you very much for your rpl .Can i knw y u multiplying 2 frm 14th hour ..

#6 LogeshR

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Posted 07 September 2010 - 07:08 AM

Question no.3 it is analogous to a network topology question ....like what is the no. of connections needed in a full-mesh type of network , where no. of node =23 ?? in a full mesh, no og connections = (n.n-n)/2=(23.23-23)/2= (529-23)/2 = 506/2 = 253

No ..ans is wrong boss ..while solving they gave options like 22 ,23 like this

#7 ksweta

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Posted 07 September 2010 - 08:01 AM

Thank you very much for your rpl .Can i knw y u multiplying 2 frm 14th hour ..

bcuz its given in the question that it gets doubled every hour...

#8 LogeshR

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Posted 07 September 2010 - 09:05 PM

bcuz its given in the question that it gets doubled every hour...

can you solve other questions

#9 Anil kumar1202

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Posted 10 September 2010 - 11:43 AM

6.In a question ,last part has ,the ages of two people has the ratio of 6:6 and by adding the numbers we get 44,after how many years the ratio would be 8:7? Ans:given Adding the number 444+4 = 8ans 823 men shake hand with each other in a party. Maximum no of handshakes without cyclic handshakes.(n-1) or (n(n-1))/2 substitute 23 in both the formulas given check options if u found that is the ans... only one will satisfy

#10 LogeshR

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Posted 10 September 2010 - 01:39 PM

6.In a question ,last part has ,the ages of two people has the ratio of 6:5 and by adding the numbers we get 44,after how many years the ratio would be 8:7? Ans: given Adding the number 44 4+4 = 8 ans 8 23 men shake hand with each other in a party. Maximum no of handshakes without cyclic handshakes. (n-1) or (n(n-1))/2 substitute 23 in both the formulas given check options if u found that is the ans... only one will satisfy

Can you explain me the LOGIC pls tat is age probs r jus adding d nos

#11 charugoel10@gmail.com

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Posted 10 September 2010 - 11:57 PM

Can you explain me the LOGIC pls tat is age probs r jus adding d nos

ya can u explain y we have added the 2 numbers in age problem and i dont understand the solution of handshake problem

#12 LogeshR

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Posted 11 September 2010 - 07:41 AM

ya can u explain y we have added the 2 numbers in age problem and i dont understand the solution of handshake problem

For Handshake problem we having formula if given no is odd then hv to use (n-1) ,if even then n(n-1)/2 ..

#13 jitendra.shahare

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Posted 17 September 2010 - 12:44 PM

Thank you very much for your rpl .Can i knw y u multiplying 2 frm 14th hour ..

B tank will fill up double in every hour so multiplying 2 frm 14th hour after 13th hr next will b 14th hr na n given data is up to 13hr