Answer:
30/52
Step-by-step explanation:
its a 26/52% chance to get a black card because 13 spain cards and 13 clovers add it together you get 26 and theirs 4 kings in a dack so add them both together 26/52+4/52=30/52
28
21^2+28^2=35^2
(0.5 x 1.2)) x 2 = 0.6