Question

1. If A = 1 + 3 + 5 + .... + 99 and
B = 2 + 4 + 6 + .... + 100, then the value of A - B is ........

Please answer this.. ​

Answer 1

Step-by-step explanation:

this is ap series

99=1+(n-1)2

49=n-1

50=n

50/2(2+98)

2500=A

how many terms in B=?

100=2+(n-1)2

50=n

25(102)

B=2550

A-B=-50