(i) the digits are repeated? (ii) the repetition of digits is not allowed?
A person is selected at random from this group to act as a spokesperson. What is the probability that the spokesperson will be either male or over 35 ...
(a) you both enter the same section? (b) you both enter the different sections?
(i) P(2) (ii) P(1 or 3) (iii) P(not 3)
(i) all will be blue? (ii) atleast one will be green?
(i) The student opted for NCC or NSS. (ii) The student has opted neither NCC nor NSS. (iii) The student has opted NSS but not NCC.
19. In an entrance test that is graded on the basis of two examinations, the probability of a randomly chosen student passing the first examination is 0.8 and the probability of passing the second examination is 0.7. The probability of passing atleast one of them is 0.95. What is the probability of passing both?
(i) P(E or F), (ii) P(not E and not F).
(i) P(A)=0.5, P(B)=0.7, P(A∩B)=0.6 (ii) P(A)=0.5,P(B)=0.4,P(A∪B)=0.8
(i) 3 heads (ii) 2 heads (iii) atleast 2 heads (iv) atmost 2 heads (v) no head (vi) 3 tails (vii) exactly two tails (viii) no tail (ix) atmost two tails