Question

1 -2 + 3 -4+5-6+...+99-100= ?​

Answer 1

Answer:

(1+3+5+......+99) - ( 2+4+6+.....+100)

50/2(100) - 50/2(102)

2500 - 2550

- 50

Answer 2

Step-by-step explanation:

✨✨(1+3+5.....+99)-(2+4+6...100)

=25x100-25x102

= 2500-2550

=-50Ans✨✨