If and then is equal to ____.
0.61
0.39
0.48
None of the above
If A and B are any two events, then ____.
A bag contains 8 black and 7 white balls. Two balls are drawn at random. Then for which the probability is more ____.
Both balls are white
One ball is white and one is black
Both balls are black
All of the above are equals
Two friends A and B have equal number of daughters. There are three cinema tickets which are to be distributed among the daughters of A and B. The probability that all the tickets go to daughters of A is 1/20. The number of daughters each of them have is ____.
4
5
6
3
5 boys and 5 girls are sitting in a row randomly. The probability that boys and girls sit alternatively is ____.
5/126
1/126
4/126
6/125
If and then value of k equals _____.
2
4
6
1
____.
1
3
-3
0
____.
None of the above
If then x lies in the interval ____.
(– 2, –1)
(1, 2)
None of the above
____.
0
-1
1
None of the above