Discussion :: Problems on Numbers - Data Sufficiency 2 (Q.No.1)
Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.
|Shibi said: (Jan 28, 2011)|
|But we can say the answer will be 52 then how can we tell that we can't be able to get the answer with the clues.|
|Swapna said: (Feb 7, 2011)|
|Yes. The answer is 52. And it can be solved with 1 & 3 statements only.|
|Anay said: (Apr 27, 2011)|
|The answer can be 63 also so I guess there is enoug amiguity in the question itself.|
|Rekha said: (Oct 20, 2011)|
|I m not able to understand the 1st statement.|
|Karthik said: (Jan 29, 2012)|
|No, I think the answer is E. Because if you try to solve the statement 1 then you will end up with the same result as that of 2nd and 3rd statement. So you can't solve the problem.|
|Vineet Verma said: (Sep 3, 2012)|
|You dont need to be genius to solve this,
41-14=27 and 4-1=3
52-25=27 and 5-2=3
63-36=27 and 6-3=3
74-47=27 and 7-4=3
85-58=27 and 8-5=3
96-69=27 and 9-6=3
|Riya said: (Nov 28, 2012)|
|But actually they are right because 2 of the data give similar information. So we cannot get the answer. Yes of course we can assume by hit and trial but cannot get the answer from given data.|
|Pavithra said: (Apr 18, 2013)|
In the first step why have they considered 10 in the equation (10x+y) - (10y-x) please share the information?
|Divya said: (Jan 10, 2014)|
Just look at the first statement. It is the diff of the 2 digits and interchange of the digits is given as 27, not the given number and interchange is 27.
|Suresh Maidaragi said: (Apr 25, 2014)|
|I hope everyone can solve this, here 1st and 2nd or 1 and 3 statements are more than enough to find the two digit number.
Solution: Consider two digit number as xy lets take 1st and 2nd statements xy-yx=27 by trial and error we can take 9 as first digit and 6 as second digit now the number become 96 right so.
From statement 1 96-67=27 from statement 2 9-6=3 or we can assume 1st and 3rd statement from 3rd we assure that 96 follows. Therefore option D is correct.
|Shweta said: (Aug 25, 2014)|
|The explanation is not sufficient for me as I know there is no connection between any of the statement. Anyone can clarify it please.|
|Mridhula Joju said: (Sep 18, 2014)|
|Even with the first statement we can get both the statements 2 & 3. And from the first statement itself we can get different numbers as the answer.|
|Afreen said: (Jan 21, 2015)|
|What is the use of 3rd statement? Can anyone explain about it?|
|Kylin said: (May 8, 2018)|
Consider xy as number,
then according to 3 number it will be like
1) xy - yx=27
2) x - y=3
There are 10 digits 0-9.
So according to 2 second and third statement (x - y=3 and x>y).
x y xy-yx.
9 6 96-69 = 27
8 5 85-58=27
7 4 74-47=27
6 3 63-36=27
5 2 52-25=27
4 1 41-14=27.
|Nagendra Singh said: (Sep 20, 2018)|
|The correct answer is 2 option. 1 and 3 can give the answer of the question.
From statement 1
( 10x + y) - ( 10y + x ) = 27,
9( x-y) = 27,
x-y = 3.
From the 1st statement, we get the second statement so no need of a 2nd statement
The unit place is less than 3 by tens place.
So we have the condition to check;
By checking all condition we found a number 52.
52 - 25 = 27.
The difference of digit is also 3.
Difference of unit's place and ten's is also 3
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