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 TCS 2010 PUZZLES, Please find answers for this questions and rpl in forum
Sep 1 2010, 07:00 AM
Post #1

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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
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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.[size=2]
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:

 Sep 6 2010, 07:53 PM Post #2 Newbie Group: Members Posts: 2 Joined: 19-June 10 Member No.: 345,656 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.
 Sep 6 2010, 08:23 PM Post #3 Newbie Group: Members Posts: 2 Joined: 19-June 10 Member No.: 345,656 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
 Sep 7 2010, 03:43 AM Post #4 Newbie Group: Members Posts: 7 Joined: 21-August 09 Member No.: 232,951 4.[size=2][/size]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 1/1614th hrs tank B filled (1/16)*2=2/16 like this 15th hrs tank B filled 4/1616th hrs tank B filled 8/1617th hrs tank B filled 16/16 so ans will b 17 hrs
 Sep 7 2010, 07:07 AM Post #5 Advanced Member Group: Members Posts: 95 Joined: 24-July 10 From: Chennai Member No.: 377,528 QUOTE (jitendra.shahare @ Sep 7 2010, 03:43 AM) 4.[size=2][/size]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 1/1614th hrs tank B filled (1/16)*2=2/16 like this 15th hrs tank B filled 4/1616th hrs tank B filled 8/1617th hrs tank B filled 16/16 so ans will b 17 hrsThank you very much for your rpl .Can i knw y u multiplying 2 frm 14th hour ..
 Sep 7 2010, 07:08 AM Post #6 Advanced Member Group: Members Posts: 95 Joined: 24-July 10 From: Chennai Member No.: 377,528 QUOTE (shashank sharda @ Sep 6 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 = 253No ..ans is wrong boss ..while solving they gave options like 22 ,23 like this
 Sep 7 2010, 08:01 AM Post #7 Member Group: Members Posts: 29 Joined: 25-June 10 Member No.: 350,184 QUOTE (LogeshR @ Sep 7 2010, 07:07 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...
 Sep 7 2010, 09:05 PM Post #8 Advanced Member Group: Members Posts: 95 Joined: 24-July 10 From: Chennai Member No.: 377,528 QUOTE (ksweta @ Sep 7 2010, 08:01 AM) bcuz its given in the question that it gets doubled every hour...can you solve other questions
 Sep 10 2010, 11:43 AM Post #9 Advanced Member Group: Members Posts: 30 Joined: 6-July 10 Member No.: 359,817 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
 Sep 10 2010, 01:39 PM Post #10 Advanced Member Group: Members Posts: 95 Joined: 24-July 10 From: Chennai Member No.: 377,528 QUOTE (Anil kumar1202 @ Sep 10 2010, 12:43 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 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 satisfyCan you explain me the LOGIC pls tat is age probs r jus adding d nos
 Sep 10 2010, 11:57 PM Post #11 Newbie Group: Members Posts: 1 Joined: 10-September 10 Member No.: 421,096 QUOTE (LogeshR @ Sep 10 2010, 01:39 PM) Can you explain me the LOGIC pls tat is age probs r jus adding d nosya can u explain y we have added the 2 numbers in age problem and i dont understand the solution of handshake problem
 Sep 11 2010, 07:41 AM Post #12 Advanced Member Group: Members Posts: 95 Joined: 24-July 10 From: Chennai Member No.: 377,528 QUOTE (charugoel10@gmail.com @ Sep 11 2010, 12:57 AM) ya can u explain y we have added the 2 numbers in age problem and i dont understand the solution of handshake problemFor Handshake problem we having formulaif given no is odd then hv to use (n-1) ,if even then n(n-1)/2 ..
 Sep 17 2010, 12:44 PM Post #13 Newbie Group: Members Posts: 7 Joined: 21-August 09 Member No.: 232,951 QUOTE (LogeshR @ Sep 7 2010, 08:07 AM) 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

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