Determine the odds of drawing two aces if two cards are removed from a regular deck.
(r...
Mathematics, 23.01.2020 08:31 madinaxoxo605
Determine the odds of drawing two aces if two cards are removed from a regular deck.
(regular deck has 52 cards)
(answer is 1: 220, but idk how to get it)
Answers: 1
Mathematics, 21.06.2019 16:20
Which math sentence can be used to determine if the triangle is a right triangle?
Answers: 1
Mathematics, 21.06.2019 18:40
Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.
Answers: 3
Mathematics, 21.06.2019 23:30
Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.
Answers: 1
Mathematics, 27.03.2020 17:03
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Mathematics, 27.03.2020 17:04