Question

7. The value of 1° +2° +3° +4°+ 5°
is​

Answer 1

Answer:

I think your question is not correct

check it

Answer 2

Step-by-step explanation:

1−2+3−4+5−.....+101

=(1+3+5+.....+101)−(2+4+6+.....+100)

=(1+3+5+.....+101)−2(1+2+3+.....+50)

=(51)

2

−2(

2

50(50+1)

)

=2601−2×1275

=2601−2550

=51