X is taking up subjects - mathematics, physics and chemistry in the examination. His probabilities of getting grade A in these subjects are 0.2, 0.3 and 0.5 respectively. Find the probability that he gets grade A in (i) all subjects (ii) no subject (iii) two subjects.

X is taking up subjects Mathematics, Physics and Chemistry in the examination. His probabilities of getting grade A in these subjects are 0.2, 0.3, and 0.5 respectively. Find the probability; that he gets (i) Grade A in all subjects (ii) Grade A in no subject (iii) Grade A in two subjects

X is taking up subjects Mathematics,Physics and Chemistry in the examination.His probabilities of getting grade A in these subjects are 0.2,0.3, and 0.5 respectively.Find the probability; that he gets (i) Grade A in all subjects (ii) Grade A in no subject (iii) Grade A in two subjects

Neelam is taking up subjects - Mathematics, Physics and Chemistry. She estimates that her probabilities of receiving a grade A in these courses. are 0.2, 0.3 and 0.9 respectively. If the grades can be regarded as independent events, find the probabilities that Neelam receives : All A’s .

Neelam is taking up subjects - Mathematics, Physics and Chemistry. She estimates that her probabilities of receiving a grade A in these courses. are 0.2, 0.3 and 0.9 respectively. If the grades can be regarded as independent events, find the probabilities that Neelam receives : Exactly two A’s .

a. The probability that a student will receive an A,B,C or D grade is 0.40, 0.35, 0.15 and 0.10 respectively. Find the probability that a student will receive: (i) not an A grade(ii) at most a C grade (iii) B or C grade. b. Neelam is taking up subjects Mathematics Physics and Chemistry. She estimates that her probabilities of receiving a grade A in these courses, are 0.2, 0.3 and 0.9 respectively. If the grades can be regarded as independent events, find the probabilities that Neelam receives, (i) All A,'s (ii) NO A's (iii) Exactly two A's

Neelam has offered physics, chemistry and mathematics in Class XII. She estimates that her probabilities of receiving a grade A in these courses are 0.2, 0.3 and 0.9 respectively. Find the probabilities that Neelam receives (i) all A grades (ii) no A grade (iii) exactly 2 A grades.

The probability that a student will receive A, B, C or D grade or 0.40, 0.3, 0.1 and 0.10 respectively. Find the probability that a student will receive. i. B or C grade ii. at most C grade.

The probability that a student will receive A, B, C or D grade or 0.40, 0.3, 0.1 and 0.10 respectively. Find the probability that a student will receive. i. B or C grade ii. at most C grade.

Savio scores x marks in Mathematics, y marks in Physics, and z marks in Chemistry. Calculate his total score in all three subjects.