Candy's E-49 19-21

Question 19
What is the probability of winning a raffle if 500 tickets are sold and you buy 5 of them?
P (win)
PO/TPO
5 /TPO
5/500
1/100
0.01 in 100
1%

Question 20
A class of 25 students has 15 girls and10 boys. If one student is chosen at random, what is the probability it is a girl?
P (girl)
PO/TPO
15/TPO
15/25
3/5
o.6 in 100
60%

Question 21
There are 26 letters in the alphabet. What is the probability that a letter chosen at random is in the word MATHEMATICS?
P (MATHEMATICS)
PO/TPO
8/TPO
8/26
4/13
0.307 in 100
30.7%

My own question

You go to the pound and you see 20 dogs they are all huskies. 5 of them are white with red on the back, 4 of them are white with black on the back, 8 of them are white with grey on the back, and 3 of them are white with red, black and grey on the back. What is the chance of the ones that are white with red on the back getting chosen?


Answer :
P (huskies)
PO/TPO
5/TPO
5/20
1/4
25 in 100
25%