1,3,5,7,9,..50 find term of sequnce for this.
Answers:
A) 1345  B) 1567  C) 1243  D) 2767  E) 2500
This is an arithmetic progression, and we can write down   a=1a=1 ,d=2d=2 , n=50n=50 .   We now use the formula, so that   Sn=12n(2a+(n−1)l)Sn=12n(2a+(n−1)l)   S50=12×50×(2×1+(50−1)×2)S50=12×50×(2×1+(50−1)×2)   =25×(2+49×2)=25×(2+49×2)   =25×(2+98)=25×(2+98)   =2500=2500 .   2500
<result>E</result>
1,3,5,7,9,..50 find term of sequnce for this.