Wiki User
∙ 14y agoTwo out of nine. 2:9.
Wiki User
∙ 14y agoIf you pick enough cards, without replacement, the probability is 1. The probability for a single random draw is 1/26.
(3/7)*(2/7)=(6/49) You have a 6 out of 49 probability.
If you draw enough balls, without replacement, the probability is 1.The answer depends onhow many balls are drawn, andwhether or not they are replaced.Unfortunately, your question gives no information on these matters.
x X over 2 = 2
The answer depends on how many are picked,whether they are returned after picking and whether the picking is done at random. In a single random selection the probability is 17/25.
If you pick enough cards, without replacement, the probability is 1. The probability for a single random draw is 1/26.
(3/7)*(2/7)=(6/49) You have a 6 out of 49 probability.
1 in 52
The probability of picking a black ace in one random draw from a normal pack of playing cards is 1/26.
80% chance, Or 40/50
11/18 x 10/17 = .359
The probability of drawing three black cards one at a time with replacement from a standard deck of 52 cards is 1/3x1/2x26/52, which is 0.833.
The probability of drawing three black cards from a standard pack depends on:whether the cards are drawn at random,whether or not the drawn cards are replaced before the next card is drawn,whether the probability that is required is that three black cards are drawn after however many draws, or that three black cards are drawn in a sequence at some stage - but not necessarily the first three, or that the first three cards cards that are drawn are black.There is no information on any of these and so it is not possible to be certain about the answer.The probability of drawing three black cards, in three random draws - without replacement - from a standard deck, is 0.1176 approx.
If you draw enough balls, without replacement, the probability is 1.The answer depends onhow many balls are drawn, andwhether or not they are replaced.Unfortunately, your question gives no information on these matters.
Suppose there are only 20 cars in the world: 5 will be black and 2 will be black SUVs, so if you pick a black car at random there are 2 chances out of 5 that it will be an SUV, ie probability of 0.4 or 40%
It is (7+4)/(7+5+4+4) = 11/20
x X over 2 = 2