" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
b = 2
Un = 300
300 = 102 + (n-1)2
300 = 2n + 102 - 2
300 = 2n + 100
2n = 300 - 100
2n = 200
n = 200/2 =100
Sn = 100/2 (2(102) + (100 - 1)2)
Sn = 50 (204 + 198)
Sn = 50 x 402
Sn = 20.100