The evolution of the `C_(4)` photosynthetic system is probably one of the strategies for maximising the availability of (A)____ while minimising (B)____ loss

C_4 -photosynthetic system is present in plants which are formed in

The probability that a student passes at least in one of the three examinations A,B,C is 0.75, the probability that he passes in atleast two of the exams is 0.5 and the proabability he passes exactly two of the exams is 0.4 . If alpha,beta, gamma , are respectively the probabilities of the student passing in A,B,C then.

Two coins are available, one fair and the other two-headed. Choose a coin and toss it once, assume that the unbiased coin is chosen with probability 3/4 Given that the outcome is head, the probability that the two-headed coin was chosen is-

* In a race,the probability of A to win the race is (1)/(7) and of B is (1)/(4). Find the probability that any one of them win the race

The probability of occurance of at least one of two events A and B is 0.6 while that of occurrence of both of them is 0.2. find the value of P(A^c) + P(B^c)

Let A,B and C be three events such that the probability that exactly one of A and B occurs is (1-k), the probability that exactly one of B and C occurs is (1 –2k), the probability that exactly one of C and A occurs is (1 –K) and the probability of all A, B and C occur simultaneously is k ^(2), where 0 lt k lt 1. Then the probability that at least one of A, B and C occur is:

A shopkeeper sells two power banks for 960 each. On one he gains 20% and on the other he incurs a loss of 20%. What was his gain or loss in the overall transaction? (a)4% gains (b)5% loss (c)4% loss (d)5% gain

Two coins are available,one fair and the other two-headed.Chose a coin and toss it once; assume that the unbiased coin is chosen with. probability (3)/(4). Given that the outcome is head the probability that the two-headed coin was chosen,is

Suppose A and B are two persons. The probability that A does the job is (4)/(5) and probability that B does the job is (3)/(4) . Then what is the probability that only one person does the job?