For the first one it might be 26? i’m not so sure
Answer:
Step-by-step explanation:
number of cards = 52
number of queen = 4
number of spades = 13
A) probability that the tenth card is a queen
drawn time (r) = 1
position of success(x) = 10th
p = 4/52
P( x,r,p) = 
p(10,1,4/52) = 9C0(4/52)^1 * (48/52)^9 = 0.0374
B) probability the twentieth card is a spade
x = 20
r = 1
p = 13 / 52
P(20,1,26/52) = 19C0(26/52)^1 * (26/52)^19 = 0.0010
c) The last five cards been spades
p(last five cards been spades )
p(48..52, 5, 13/52 ) = 47...52C4(13/52)^5 * (39/52)^48..52 - 5
12 ounces of juice mix 1 ounce of juice mix
__________________ = __________________
36 ounces of water 3 ounces of water
For every ounce of juice mix, there are 3 ounces of water.
Hopefully, this answers your question.
(a) 8.64 hours (b) 5.68 hours (c) .74 hours (44.4 minutes)