" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a= 201
b= 3
Un= a+ (n-1)b
201 + (n-1)3=297
201 + 3n -3 = 297
3n = 297 - 201 + 3
3n= 99
n= 33
S33= 33/2(2. 201 + (33-1)3)
=33/2 (402 + 96)
=33/2. 498
=8217