Question
Which of the below probability distribution has same
mean and variance?Solution
Poisson distribution is the only distribution where E(X) = VAR (X)=Lambda.Â
If the letters of the word PLAYERS be arranged at random, what is the probability that there are exactly five letters between P and S? Â
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From a standard pack of 52 cards, what’s the probability of drawing either a Heart or a Queen?
A box contains 7 blue and 7 green balls. The probability of drawing three balls of the same colour is
A box contains Z black balls and 7 white balls. If two balls are drawn at random, one after another without replacement, and the ...
What is the probability that the cards drawn contains 1 red card, 1 purple card and 1 yellow card?
22 rotten bananas are accidentally mixed with 136 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
The probability of selecting a rotten apple randomly from a heap of 1050 apples is 0.36. What is the number of rotten apples in the heap?
17 rotten bananas are accidentally mixed with 120 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
48 pens are there in a box where 22 are red pens, ‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blu...
