help me please cuz im stuck

Question

You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. Find the probability of the compound event. Write your answer as a fraction or percent rounded to the nearest tenth. The probability of choosing a 5 and then a 6 is

using tiles 5,6,7,8,9,10,20

Answer 1

Choosing a 5 probability is 1/7 (1 out of 7 because there is only one 5 out of 7 numbers)

Then there are 6 left. Choosing a 6 probability is 1/6 (because there is one 6 out of 6 numbers)

The probability of choosing a 5 then a 6

(1/7)(1/6)=1/42