There are three persons aged 60, 65 and 70 years old. The survival probabilities for these three persons for another 5 years are 0.7, 0.4 and 0.2 respectively. What is the probability that at least two of them would survive another five years?

There are three persons aged 50, 60, and 70 years. The probability to live 10 years more is 0.8 for a 50 years old, 0.5 for as 60 years old and 0.2 for a 70 years old person. Find the probability that at least two of the three persons will remain alive 10 years hence.

There are three persons aged 50,60 and 70 years.The probability to live 10 years more is 0.8 for a 50 years old 0.5 for a 60 years old and 0.2 for a 70 years old person.Find the probability that at least two of the three persons will remain alive 10 years hence.

If the probabilities of two dogs A and B dying within 10 years are respectively p and q, then the probability that at least one of them will be alive at the end of 10 years is

A problem is given to three students A,B,C then probability of solving is 0.6,0.5 and 0.7 respectively. What is the probability that is solved:

Three persons A,B and C fire a target in turn . Their probabilities of hitting the target are 0.4 , 0.3 and 0.2 respectively . The probability of two hits is

Three persons A,B and C, fire at a target in turn, starting with A. Their probability of hitting the target are 0.4, 0.3 and 0.2, respectively. The probability of two hits is

Three persons A, B and C, fire at a target in turn starting with A. Their probability of hitting the target are 0.4, 0.3 and 0.2 respectively. The probability of two hits is …………

Three persons A,B and C , fire at a target in turn, starting with A . Their probability of hitting the target are 0.4, 0.3 and 0.2 , respectively. The probability of two hits is

Three persons A,B and C fire at a target in turn, starting with A. their probabilities of hitting the target are 0.4, 0.3 and 0.2 respectively. The probability of two hits is

Three person A, B and C fire at a target, inturn starting. with A. Their probability of hitting the target are 0.4,0.3 and 0.2 respectively The probability of two hits is