The probability that Krishna will be alive 10 years hence is 7/15 and that Hari will be alive is 7/10. What is the probability that both Krishna and Hari will be dead 10 years hence?

The probability that a 50-years-old man will be alive at 60 is 0.83 and the probability that a 45-years-old women will be alive at 55 is 0.87. Then (a) . Probability both the person are alive (b) . Probability at least a person is alive

A bag contains 20 coins. If the probability that the bag contains exactly 4 biased coin is 1/3 and that of exactly 5 biased coin is 2/3 , then the probability that all the biased coin are sorted out from bag is exactly 10 draws is a. 5/(10)(.^(16)C_6)/(.^(20)C_9)+1/(11)(.^(15)C_5)/(.^(20)C_9) b. 2/(33)[(.^(16)C_6+5 .^(15)C_5)/(.^(20)C_9)] c. 5/(33)(.^(16)C_7)/(.^(20)C_9)+1/(11)(.^(15)C_6)/(.^(20)C_9) d. none of these

Two buses A and B are scheduled to arrive at a town central bus station at noon. The probability A will be late is 1/5 . The probability that bus B will be late is 7/25 . The probability that the bus B is late given that bus A is late is 9/10 . Then the probabilities: (a) probability that neither bus will be late on a particular date is 7/10 (b) probability that bus A is late given that bus B is late is 9/14

In a lottery there are 10 prizes and 25 blanks. What is the probability of getting a prize ?

X and Y stand in line at random with 10 other people what is the probability that there are 3 people between X and Y ?

The odds against a man who is 45 years old, living till he is 70 are 7:5 and the odds against his wife who is now 36, living till she is 61 are 5:3 . Find the probability that (a) the couple will be alive 25 years hence, (b) at least one of then will be alive 25 years hence.

It is 9 to 5 against a person who is 50 years living till he is 70 and 8 to 6 against a person who is 60 years living till he is 80. Find the probability that at least one of them will be alive after 20 years.

The probability that a leap year selected at random will contain 53 Sundays is (K)/(7) , then find the value of K.

Suppose that 90% of people are right-handed. What is the probability that at most 6 of a random sample of 10 people are right-handed?

If x in[0,6] , the probability that the expression x^(2)-7x+10 ge 0 is