Mathematics
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of red ball, find the number of blue balls in the bag.
Related Questions
For the following frequency distribution, draw an ogive and then use it to estimate the median.
C.I. f 450 - 550 40 550 - 650 68 650 - 750 86 750 - 850 120 850 - 950 90 950 - 1050 40 1050 - 1150 6 For the same distribution, as given above, draw a histogram and then use it to estimate the mode.
In a single throw of two dice, what is the probability of getting
(i) a total of 9
(ii) two aces (ones)
(iii) at least one ace
(iv) a doublet
(v) five on one die and six on the other
(vi) a multiple of 2 on one and a multiple of 3 on the other ?
Find the probability of drawing an ace or a jack from a pack of 52 cards.