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find whats wrong in this logic / LOGIC / Logical Question For All Nairalanders / Plcs (prpgrammable Logic Controllers) (2) (3) (4)
Solve This Logic Question! by AMZYMAYO(m): 7:59pm On Aug 31, 2014 |
Replace V-Z with any of the numbers below. V+W+X+Y+Z=30 (1, 3, 5, 7, 9, 11, 13, 15). U can also repeat the numbers..This question came in UPSC Final Exams held in Dec '13 and only one person, Gaurav Agarwal could solve it. |
Re: Solve This Logic Question! by yorex2011: 8:16pm On Aug 31, 2014 |
If u mean i shud replace each of the letters with one of the numbers in d bracket then its not possible.. Cos all d numbers are odd.. And no way in mathematics can u sum up an odd number of odd numbers to give an even number.. I.e.. U can't sum up 5 odd numbers to give 30... |
Re: Solve This Logic Question! by AMZYMAYO(m): 8:20pm On Aug 31, 2014 |
yorex2011: If u mean i shud replace each of the letters with one of the numbers in d bracket then its not possible.. Cos all d numbers are odd.. And no way in mathematics can u sum up an odd number of odd numbers to give an even number.. I.e.. U can't sum up 5 odd numbers to give 30...Interesting. Let's wait and see what others have to say. Thanks for your opinion. |
Re: Solve This Logic Question! by chiketee(m): 9:00pm On Aug 31, 2014 |
-1+1+5+5+15=30. am I right? |
Re: Solve This Logic Question! by AMZYMAYO(m): 9:02pm On Aug 31, 2014 |
chiketee: -1+1+5+5+15=30. am I right?You tried, almost. |
Re: Solve This Logic Question! by addempsea(m): 10:34pm On Aug 31, 2014 |
(7-1) + (7-1) + (7-1) + (7-1) + (7-1) = 30. |
Re: Solve This Logic Question! by AMZYMAYO(m): 10:47pm On Aug 31, 2014 |
addempsea: (7-1) + (7-1) + (7-1) + (7-1) + (7-1) = 30.Good try Bro. |
Re: Solve This Logic Question! by addempsea(m): 11:44pm On Aug 31, 2014 |
AMZYMAYO:am i wrong? |
Re: Solve This Logic Question! by nwaobitex: 11:46pm On Aug 31, 2014 |
hmm |
Re: Solve This Logic Question! by highmey(m): 12:17am On Sep 01, 2014 |
This question got my attention, lemme attempt it. V+W+X+Y+Z=30 (1, 3, 5, 7, 9, 11, 13, 15). Since we can replace any letter with V-Z, then let Y=V-Z. V+W+X+V 2V+W+X=30, W+X=30-2V, =>W+X=2(15-V), Considering both LHS (left hand side) and RHS (right hand side), they must be equal to each other. After some trial and error, the right/best option is to let V=13, W=1, X=3. (Recalculation: W+X=2(15-V)::1+3=2(15-13)::4=2(2)::4=4) So now, we have V=13, W=1 and X=3. Recall: Y=V-Z... (i) substitute V=13 into (i) then Y=13-Z, =>Y+Z=13 the two figures that best sum up to give 13 is 9 and 4 (i chose 9 because it's available from the option, also, I can easily manipulate 4). But, from the option available (1,3,5,...,15), we don't have 4. N.B: the rule doesn't restrict or limit us to repeat numbers, we can then apply the logic that 9-5=4 9+4=13, =>9+(9-5)=13 => Y=9, and Z=(9-5) . . . V=13, W=1, X=3, Y=9 and Z=(9-5) Re-computation: 13+1+3+9+(9-5)=30 That's the best I can think of! |
Re: Solve This Logic Question! by AMZYMAYO(m): 1:02am On Sep 01, 2014 |
highmey:Haba! Menn! You really tried! Like seriously! Almost the answer. |
Re: Solve This Logic Question! by highmey(m): 1:10am On Sep 01, 2014 |
AMZYMAYO: Almost can't kill a bird, bro! It's either you wrong or right. Thanks for the complement. |
Re: Solve This Logic Question! by AMZYMAYO(m): 1:58am On Sep 01, 2014 |
highmey:You are welcome. The answer will be posted later in the day. Thanks for trying. *thumbs up* 1 Like |
Re: Solve This Logic Question! by AMZYMAYO(m): 3:32pm On Sep 01, 2014 |
Final answer...Very funny. 3! + 3! + 3! + 3! + 3!= 30 Note- 3!= 3x2x1=6...... |
Re: Solve This Logic Question! by addempsea(m): 11:41pm On Sep 01, 2014 |
AMZYMAYO: Final answer...Very funny.There is more than an answer to your question bro. I know i am right, and the other guy is right too. |
Re: Solve This Logic Question! by AMZYMAYO(m): 6:36pm On Sep 02, 2014 |
addempsea: There is more than an answer to your question bro. I know i am right, and the other guy is right too.You are right Bro. |
Re: Solve This Logic Question! by kkocifoz: 3:09pm On Apr 09, 2015 |
i know it has passed time but i randomly found this and i think a solution may be 3!+9+13+1+1 |
Re: Solve This Logic Question! by Ardak: 6:01am On Apr 17, 2015 |
AMZYMAYO: 15.17411+13.5119+1.31399=30 |
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