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If X is a set of numbers {1,3,5} and Y is a set of number 21 Jan 2005, 23:26
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If X is a set of numbers {1,3,5} and Y is a set of number {2,3,6}, how many different possible vales of lX-Yl are possible?

(a) 1
(b) 2
(c) 4
(d) 5
(e) 7



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If X is a set of numbers {1,3,5} and Y is a set of number 21 Jan 2005, 23:32
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I got D, but don't know if there is any easy way to solve this.
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thenine
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 02:04
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MA
If X is a set of numbers {1,3,5} and Y is a set of number {2,3,6}, how many different possible vales of lX-Yl are possible?

(a) 1
(b) 2
(c) 4
(d) 5
(e) 7
Show more



I also got D, but just by working it out. I don't know a short cut to solve it, but working it out took far less than 2 minutes
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 09:28
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D for me too.

Yes even I went the long way......
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 11:24
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can you guys explain your answers....


I get 6...and I dont see that option

I get the |X-Y| as 0, 1, 2, 3, 4, 5....

3-3=0
6-5=1
5-3=2
6-3=3
6-2=4
6-1=5

Sine we have | | we can neglect the other results that give +ve and -ve
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 17:14
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some of your numbers are subtracting y-x..

for example your
Quote:
6-5 = 1
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is Y-X

the questions is asking for X-Y
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 17:28
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81rabbit
some of your numbers are subtracting y-x..

for example your
Quote:
6-5 = 1
is Y-X

the questions is asking for X-Y
Show more

|X-Y|=|Y-X|
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 21:54
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thenine


I also got D, but just by working it out. I don't know a short cut to solve it, but working it out took far less than 2 minutes
Show more


OA is D.

the possible values of lx-yl are 9, but some of the values are repetitive, therefore there are only 5 diff values. i think this is the only possible short cut way to solve this problem.
l1-2l=1
l1-3l=2
l1-6l=5

l3-2l=1
l3-3l=0
l3-6l=3

l5-2l=3
l5-3l=2
l5-6l=1

the values are 0,1,2,3 and 5.
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If X is a set of numbers {1,3,5} and Y is a set of number 22 Jan 2005, 22:20
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fresinha12
can you guys explain your answers....


I get 6...and I dont see that option

I get the |X-Y| as 0, 1, 2, 3, 4, 5....

3-3=0
6-5=1
5-3=2
6-3=3
6-2=4
6-1=5

Sine we have | | we can neglect the other results that give +ve and -ve
Show more

fresinha,

2 is not in set x. therefore l6-2l =4 is not a value of lx-yl.
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If X is a set of numbers {1,3,5} and Y is a set of number 23 Jan 2005, 11:25
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aye aye aye.....damn, how could I have screwed this one up...your right, 2 is in the same set...ma bad...if i can only stop making these stupid mistakes....ahhhhhhhhh!


MA
fresinha12
can you guys explain your answers....


I get 6...and I dont see that option

I get the |X-Y| as 0, 1, 2, 3, 4, 5....

3-3=0
6-5=1
5-3=2
6-3=3
6-2=4
6-1=5

Sine we have | | we can neglect the other results that give +ve and -ve
fresinha,

2 is not in set x. therefore l6-2l =4 is not a value of lx-yl.
Show more



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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