The answer depends on
Since you have not bothered to share any information on these factors, I cannot provide a more useful answer.
The probability of drawing a red spade is zero. There are no red spades in a standard deck.
This is the same as the probability of choosing either a red of a blue marble. There are 5+4 out of 15 ways of doing this. The probability is therefore 9/15 = 3/5.
120
The probability of choosing a blue marble is 5 in 15 or 1 in 3. The probability of then choosing a green marble is 5 in 14. (One is missing) Multiply the two probabilities and you get 5 in 42.(P = 0.1190... about 12%).
It is 1/2 * 1/2 = 1/4
28
The probability of drawing a red spade is zero. There are no red spades in a standard deck.
Since there are 2 red tens in a deck of 52 cards, the probability of choosing a red ten is 2 out of 52 = 1 out of 26 = 0,0384615385...
The probability is 0.
The probability, or probility, even, is 0 since tere can be no such thing as "choosing red card of the black".
More information is required. Probability by definition is the proportion of a part, called a sample, to the whole, called a population. Thus in this question, we are given the sample only and without the population, it is impossible to calculate the probability. We need to know the size of the population. As a guide, supposing there are 8 red marbles in a jar containing 40 marbles, then the probability of choosing red is 8/40 or 1: 0.2. There is 20 per cent probability of choosing red.
100%
This is the same as the probability of choosing either a red of a blue marble. There are 5+4 out of 15 ways of doing this. The probability is therefore 9/15 = 3/5.
6/10 or reduced is 3/5
cant answer this question without more information....probability requires a ratio.
1/3
4/10