It would help if the number of blue disks - or a letter to represent that number - were given.
50%
50%
It is 5/52 for a single card, drawn randomly.
About a 3.8% chance (2 / 52 = 0.038...).
The probability is: 55/200 or 11/40
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".
1/26
The probability of choosing a red or black card from a standard deck of 52 cards is 52 in 52, or 1 in 1. In other words, it will happen no matter what.
50%
It is 2/52 or 1/26.
50%
There are 8 marbles that aren't black, out of a total of 12 marbles, so the probability is 8/12 or 2/3.
The probability depends on:whether the cards are drawn randomly,how many cards are drawn, andwhether the cards are replaced before drawing the next card.If only 2 cards are drawn randomly, and without replacement, the probability is 0.00075 approximately.
It is 5/52 for a single card, drawn randomly.
A laundry bag contains 160 black socks and 300 red socks. 1940 black socks must be added so that the probability of choosing a black sock is 7 of 8.
About a 3.8% chance (2 / 52 = 0.038...).