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12 Jun 2007, 02:06
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
82% (01:17) correct
18%
(01:10)
wrong
based on 235
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Set A has 20 numbers and B has 40 numbers. Is the range of B greater than 45?
(1) The range of A and B combined exceeds 50
(2) Range of B is greater than range of A
(1) The range of A and B combined exceeds 50
(2) Range of B is greater than range of A
12 Jun 2007, 02:31
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i'll go w/E.
1) set A at most will have a range of 20 #s. if so, B will have a range of at least 30 #s. w/o factoring in A having a range less than 20 we can see that this is already ins.
2) this tells us nothing. set a can be composed of nineteen 1s and one 5. set b can be composed of twelve 1s, thirteen 2s and fifteen 3s.
1 and 2 - again, the range of A can be 20 and the range of B can be 31. here, B is greater than A and A and B 's range exceed 50.
12 Jun 2007, 05:22
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E for me too.
Statement 2 is clearly insufficient. Statement 1 also doesn't shed much light. If Set A and B are combined and their range is . 50, still we dont know about the range of B as B could be comprised of 40 1's and A could containing 1 & 100.
Both statement staken together also tell nothing.
Statement 2 is clearly insufficient. Statement 1 also doesn't shed much light. If Set A and B are combined and their range is . 50, still we dont know about the range of B as B could be comprised of 40 1's and A could containing 1 & 100.
Both statement staken together also tell nothing.
