" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
U7= 37
U11= 57
U7= a+(n-1)b= 37
a+(6)5 = 37
a+30 =37
a= 37-30 = 7
U20= a+(n-1)b
7+ (20-1)5 = 7+(19)5
7+95= 102 (B)