5. The years 2020 and 1717 both consist of a repeated two-digit number. How many years after 2020 will it be until the next year which has this property?
A 20
B 101
C 120
D 121
E 202
SolUtion
$\mathbf{B}$

The next year with this property is 2121 which is 101 years after 2020 .