Question

Find the sum of each arithmetic series.

the first 100 odd natural numbers.

Answer 1

@amistre64
@zzr0ck3r
@radar

Answer 2

\[\sum_{n=1}^{100}2n-1=\sum_{n=1}^{100}2n-\sum_{n=1}^{100}1=2\sum_{n=1}^{100}n-\sum_{n=1}^{100}1\]

Answer 3

\[2\frac{100*101}{2}-100\]

Answer 4

100*100 = 10000

Answer 5

I stole @amistre64 method:)

Answer 6

1+3+5+....+99
199+197+.....101
add them top to bottom
200*50 = 10000

Answer 7

Thanks

Answer 8

np