Question
Three cards are drawn one after another with
replacements from a standard deck of 52 cards. What is the probability of getting the first card a Queen, the second card a black card, and the third card a face card?Solution
In case of replacement- probability of Queen = 4/52 =1/13 probability of black card =26/52=1/2 probability of face card - There are 12 face cards (4 Jacks, 4 Queens, 4 Kings) in a deck of 52 cards. =12/52=3/13 =1/13 ×1/2 × 3/13 =3/338
Four terms are in proportion. The first, second and fourth terms are 4, 22, and 33. Find the third term.
4Â Â Â Â Â Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24Â Â Â Â Â Â Â Â Â Â Â 91Â Â Â Â Â Â Â Â Â Â Â 462Â Â Â Â Â Â Â Â Â 2763
18Â Â Â ...
A series is 11, 20, 42, 82, 166, 330
If another series 4, a, b, c, d, 106 follows the same pattern as the given number series, then find the appr...
12, 24, 72, 288, 1440, ?
60  61  126  387  ?   7845
315 146 267 ? 235 210
Three series are given below. You have to find the values of P, Q and R, then establish a relationship among them.
I:Â Â 840, P , 584, 456, 5...
28 34 63 ? 769 3847
...105   107   111   114   ?   127
4 5.5 19 .5 98.5 694 6251.5
...
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