" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Un = a + (n-1)b
199 = 101 + (n-1) 2
199 = 101 + 2n -2
199 = 99 + 2n
100 = 2n
n = 50
S50 = 50/2 (a +Un)
= 25 ( 101 + 199)
= 25 ( 300)
= 7500