4. 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?
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Step-by-step explanation:
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? The sum of all numbers 1 to 1998 will be x – (1999+2000) = x – 3999.
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