Question
From a well-shuffled deck of 52 cards, two cards are
drawn one after the other without replacement. What is the probability that the first card is a red ace and the second card is black?Solution
ATQ, Number of red aces in the pack = 2 Number of black cards in the pack = 26 Since 1st  card is not put back. So, the required probability: (2 C1 /52 C1 ) * (26 C1 /51 C1 ) = (2/52) × (26/51) = 1/51
If (x - 1) 3 Â + (y - 2) 3 Â + (z - 3) 3 Â + 3(x + y - 3)(y + z - 5)(x + z - 4) = 0, then what is the value of (x + y +...
In an orchard, the ratio of the number of mango and lichi trees is 9:10, respectively. Also, there are few apple trees in the orchard which is 50% more ...
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