Question

2011-2010+2009-2008...-2+1

Answer 1

Всего пар будет 1005 . в сумме они дают 1*1005+1=1006

Answer 2

Answer:

The given expression "2011-2010 2009-2008...-2+1" seems to be a series of years with some arithmetic operations. It can be interpreted as follows:

- 2011-2010 = 1 - 2009-2008 = 1 - ... (continuing the pattern) - -2+1 = -1

So, the result of the given expression is -1.

This interpretation is based on the arithmetic operations applied to the given series of years.