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san4es73 [151]
3 years ago
7

What is the value of 4(-1+2-3+4-5+6-7+......+1000)???

Mathematics
1 answer:
ANTONII [103]3 years ago
4 0

Answer:

<h2>            4(-1+2-3+4-5+6-7+......+1000) = 2000</h2>

Step-by-step explanation:

-1+2 = 1

-3+4 = 1

-5+6 = 1

and so on till -999+1000 = 1

1 ....  1000    - these are 1000 numbers, so

1000:2 = 500   pairs with sum equal 1

4(500•1) = 4•500 = 2000

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