Calculating mode Practice Test

For which of the following values of would the median and the mode of the data set be equal?

$\left \{ 13, 11, 19, 17, 13, 15, 13, 17, N \right \}$

Rita keeps track of the number of times she goes to the gym each week for 1260 weeks. She goes 1 day a week for 119 weeks, 2 days a week for 254 weeks, 3 days a week for 376 weeks, and 4 days a week for 511 weeks. What is the mode of the number of days she goes to the gym each week?