Question

i need help with these three probability questions, please. thanks.

Given a standard deck of cards. Assuming that the first card drawn is the ace of spade. What is the probability that the second card will also be an ace? O 0.06 O 0.12 0.004 0.02

Answer 1

1)P(2nd ace |first ace) =3/51 =0.06 (since there remain 3 ace out of 51 cards, if first is ace)

2)

P(sum is 4) =3/36 =0.08 (since there are 3 outcomes (2,2),(!,3),(3,1)) out of 36 where sum is 4)

3)

Probability =P(detected)*P(shot down |Detected) =0.9*0.8 =0.72