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03 Apr 2012, 01:44
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E
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Difficulty:
35%
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Question Stats:
71% (00:57) correct
29%
(00:54)
wrong
based on 56
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What is the value of the two digit number x ?
(1) The sum of two digits is 4.
(2) The difference between the two digits is 2.
I was also a little confused by this.
(1) The sum of two digits is 4.
(2) The difference between the two digits is 2.
I was also a little confused by this.
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03 Apr 2012, 01:50
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What is the value of the two digit number x ?
1. The sum of two digits is 4.
The number can be 31, 13, 40, 22, so insufficient.
2. The difference between the two digits is 2.
The number can be 31, 13, so insufficient.
(1) + (2)
The number can be 31, 13, so insufficient.
Answer - E
What is your confusion ?
1. The sum of two digits is 4.
The number can be 31, 13, 40, 22, so insufficient.
2. The difference between the two digits is 2.
The number can be 31, 13, so insufficient.
(1) + (2)
The number can be 31, 13, so insufficient.
Answer - E
What is your confusion ?
03 Apr 2012, 01:53
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I think the issue at hand here is that we cannot tell which digit comes first.
Here is my explanation:
Digit1 = a
Digit2=b
so x = 10a + b
1 )a + b = 4 insufficient on own
2) a - b = 2 insufficient on own
1+ 2: Together:
Solving for a & b,
a = 3 and b = 1
However the issue now is:
Is the x = 31 or 13? because in both cases we can get a + b = 4 and difference between digits = 2
Thus the data provided is insufficent and answer is E
Here is my explanation:
Digit1 = a
Digit2=b
so x = 10a + b
1 )a + b = 4 insufficient on own
2) a - b = 2 insufficient on own
1+ 2: Together:
Solving for a & b,
a = 3 and b = 1
However the issue now is:
Is the x = 31 or 13? because in both cases we can get a + b = 4 and difference between digits = 2
Thus the data provided is insufficent and answer is E
