Question

1 - 2 +3 - 4 + 5 - 6 + ........+ 15 - 16 is​

Answer 1

$- 1 + 3 - 4 + 5 - 6 | - 15$

$- 4 - 4 + 5 -6 + 15$

$- 4 - 4 + 5 - 6 + 15$

$- 5 - 6 + 15$

$- 1 + 15 = 16$