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1- +6)+7] = -2 0 1 2 16

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Director
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1- +6)+7] = -2 0 1 2 16 [#permalink] New post 16 Aug 2007, 20:16
1-[2-(3-[4-5]+6)+7] =

-2
0
1
2
16
Director
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 [#permalink] New post 16 Aug 2007, 20:56
^please explain your order of ops.
Director
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 [#permalink] New post 16 Aug 2007, 21:02
ggarr wrote:
^please explain your order of ops.


= 1 - [2 - (3 - [4 - 5] + 6) + 7]
= 1 - [2 - (3 - [-1] + 6) + 7]
= 1 - [2 - (3 + 1 + 6) + 7]
= 1 - [2 - 10 + 7]
= 1 - [-1]
= 1 + 1
= 2
Intern
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 [#permalink] New post 16 Aug 2007, 22:43
Ans is 2.

I think the order is unimportant, as long as you unfold the signs properly.

1-[2-(3-[4-5]+6)+7]
1-2+(3+6+1)-7
-9 + 11
= 2.

Other combinations will also yield 2, but make sure you flip the signs properly as you unfold the [] or ().
Manager
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 [#permalink] New post 17 Aug 2007, 00:52
2

Wouldn't this be in like the lower-bin questions? No offense ggarr.
  [#permalink] 17 Aug 2007, 00:52
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1- +6)+7] = -2 0 1 2 16

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