Question

(1)1,3,5, ----99
(2) 1+3+5+ -----99

Answer 1

Answer:

An=a+(n-1)d=1+(n-1)2=99

      n=50

Answer 2

Answer:

2500

Step-by-step explanation:

2) total odd no. is within 100=50
so the formula to use is n^2
=50^2
=2500