Probability of no cracked on 1st selection is 3/9, second is 2/8, so multiply 3/9 & 2/8 to get 6/72 or 1/12 or 0.0833.
9
Total possibilities = 9x8 Uncracked possibilities = 3x2 = 6/72 = 1/12
If the events can be considered independent then the probability is (0.7)4 = 0.24 approx.
2/5
An event can either happen or not happen. If the probability of it happening is 3/5,then the probability of it not happening is 2/5.
The probability is 0.3692
Total possibilities = 9x8 Uncracked possibilities = 3x2 = 6/72 = 1/12
If the events can be considered independent then the probability is (0.7)4 = 0.24 approx.
2/5
The probability of getting two prime numbers when two numbers are selected at random and without replacement, from 1 to 10 is 2/15.
An event can either happen or not happen. If the probability of it happening is 3/5,then the probability of it not happening is 2/5.
The probability, if the cards are not replaced, is 2,535,000/6,497,400 = 0.3902 approx.
The probability is 0.3692
It is 1/7 if a ball is selected at random.
This depends entirely on the genotype of the parents. The probability of getting a specific genotype is the probability of getting the correct allele from mother (1/2) multiplied by the probability of getting the correct allele from father (1/2) multiplied by the number of ways this can occur. The probability of getting a phenotype, if the phenotype is dominant, is the sum of the probability of getting two dominant alleles, and the probability of getting one dominant allele. If the phenotype is recessive, the probability is equal to the probability of getting two recessive alleles.
There is no probability. Sorry.
The result of tossing the coin would not affect which number was selected. So we say that these two events are independent. We can therefore assess the probability of each of them separately and then multiply the two probabilities together for a final result. Probability of getting tails: 1/2 (since there is one way of getting heads out of two possibilities) Probability of getting zero: 1/10 (since there is one way of getting zero out of ten possibilities) Overall probability: 1/2 x 1/20 = 1/20
The probability of getting the queen of hearts is 1 in 52, or about 0.01923. The probability of getting any queen is 4 in 52, or about 0.07692. The probability of getting any heart is 13 in 52, or exactly 0.25.