One card is drawn from deck of 52 cards, each of the 52 cards being equally likely to be drawn. Find the probability that the ball drawn is red.
Total number of elementary events = 52
There are 26 red cards,out of which one red card can be drawn in 26C1 ways =26.
So,required probability = 26/52 = 1/2
If the standard deviation of 0, 1, 2, 3 ......... 9 is K, then the standard deviation of 10, 11, 12, 13 ........... 19 will be:
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