A speaks truth in 75% cases and B speaks truth in 80% cases, The probability that they contradict each other in a statement, is
Ten coins are thrown simultaneously, the probability of getting atleast 7 heads is
D.
If four digits are taken fromthe digits 1, 2, 3, 4, 5, 6, 7. The probability that the sum of digits is less than 12, is
The probability of happening exactly one of the two events A and B is
P(A) - P(B)
None of the above
The probability that at least one of the events A and B occurs is 0.7 and they occur simultaneously with probability 0.2. Then, is equal to
0.8
0.6
1.1
1.4
Seven weddings occur in a week. What is the probability that they happen on the same day?
None of these