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If x is the sum of all numbers 1 to 2000, inclusive, what is the value

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If x is the sum of all numbers 1 to 2000, inclusive, what is the value  [#permalink]

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New post 09 Apr 2018, 01:02
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A
B
C
D
E

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  15% (low)

Question Stats:

91% (00:55) correct 9% (01:39) wrong based on 53 sessions

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If x is the sum of all numbers 1 to 2000, inclusive, what is the value of the sum of all numbers 1 to 1998?

A. x – 2
B. x – 2000
C. x – 3999
D. x + 2000
E. x + 3999

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If x is the sum of all numbers 1 to 2000, inclusive, what is the value  [#permalink]

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New post 09 Apr 2018, 01:13
Bunuel wrote:
If x is the sum of all numbers 1 to 2000, inclusive, what is the value of the sum of all numbers 1 to 1998?

A. x – 2
B. x – 2000
C. x – 3999
D. x + 2000
E. x + 3999



The sum of all numbers 1 to 1998 will be x – (1999+2000) = x – 3999. Option C is the correct answer.

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If x is the sum of all numbers 1 to 2000, inclusive, what is the value &nbs [#permalink] 09 Apr 2018, 01:13
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