" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
b = 6
Un = a + (n - 1) b
294 = 102 + (n - 1) 6
294 = 102 + 6n - 6
294 = 96 + 6n
294 - 96 = 6n
198 / 6 = n
n = 33
S33 = n / 2 (a + U33)
= 33 / 2 (102 + 294)
= 33 / 2 * 396
= 6534