Cards are drawn one by one without replacement from a pack of 52 cards. The probability that 10 cares will precede the first ace is `241//1456` b. `18

Let R={5 red marbles} and B={3 black marbles} For ateast one of the three marbles drawn be black, if the first marble is red, then the following three conditions will...

Here, S={(1,2),(2,1),(1,3),(3,1),(2,3),(3,2),(1,4),(4,1),(1,5),(5,1),(2,4),(4,2),(2,5),(5,2),(3,4),(4,3),(3,5),(5,3),(5,4),(4,5)} `rArrn(S)=20` Let random variable variable be X which denotes the sum of the numbers on two cards drawn. X=3,4,5,6,7,8,9 At X=3,P(X)=`2/20=1/10` At X=4,P(X)`=2/10=1/10` At X =5,P(X)=`4/20=1/5` At X=6,...

Required probability=`4/52cdot4/52=1/13xx1/13`

To draw 2 black, 4 white, and 3 red balls in order is same as arranging two black balls at first 2 places, 4 white balls at next 4 places,...

Correct Answer - C If A draws card higher than B, then the number of favorable cases is (n - 1) + (n + 2) + … + 3 + 2...

Let events J be first drawn card is jack, Q be second drawn card is queen and K be third drawn card is king. We have to find the value...

Procedure of drawing th balls has to end at the rth draw. So, exactly two black balls are drawn in first (r-1) draws and third black ball is drawn in...

Correct Answer - `11//50` Let `A_(1)` be the event that missing card is spade and `A_(2)` be event that missing card is non-spade. Then, `P(A_(1))=1/4,P(A_(2))=3/4` Let A be the event that...

Correct Answer - C 18 draws are required for 2 aces. This means in the first 17 draws, there is one ace and 16 other cards, and 18th draw produces an...

Correct Answer - 4 Let event A:Card is of heart but not king (12 cards) Event B: King but not here (3 cards) Event C: Heart and king (1 card) `therefore`...