4/7
The probability is 11/21.
50%
The probability of picking 5+3 = 8 students is 0.1202
It is 21/26.
there are 4 1's or aces in a pack of 52 cards. Probability of picking an ace=4/52=1/13
4/7
Since there are four 5's in a deck of 52 cards, the probability of picking a 5 from a deck of 52 cards is 4 in 52, or 1 in 13, or about 0.07692.
The probability of picking an 's' in the word Mississippi is 100% - you will always find one ... eventually. However if you mean with single choice from the 11 characters of the word Mississippi, then the probability is 4 chances in 11 which is just over 36% or a probability of 0.363636 recurring. My odd answer illustrates the need to pose questions without ambiguity. Beano GB
The probability of picking a distinct set of 3 numbers from 20 is1/[20!/(3!)(17!)]= 1/1140The probability of only picking 3 from 20 is1/20
The probability is 1/b.
The probability is 0.25
The probability is 11/21.
50%
The probability of picking a black ace in one random draw from a normal pack of playing cards is 1/26.
The answer depends on whether the first number is replaced before picking the second. If not, the probability is 0.029
There are two black 6's in a deck of cards, the probability of not picking one is 50/52 or 25/26, or 96.2%