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

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Math Expert
Joined: 02 Sep 2009
Posts: 58401
If x is the sum of all numbers 1 to 2000, inclusive, what is the value  [#permalink]

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09 Apr 2018, 02:02
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Difficulty:

5% (low)

Question Stats:

86% (00:54) correct 14% (01:17) wrong based on 71 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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09 Apr 2018, 02:13
2
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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Re: If x is the sum of all numbers 1 to 2000, inclusive, what is the value  [#permalink]

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23 May 2019, 23:32
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

Sum of all numbers 1 to 2000 = x

Sum of last 2 terms = 1999 + 2000 = 3999

Sum of all numbers 1 to 1998 = x - 3999

Re: If x is the sum of all numbers 1 to 2000, inclusive, what is the value   [#permalink] 23 May 2019, 23:32
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