Two dice are thrown. The probability that the sum of the points on two dice will be $7$ is:

$A$ student appears for tests $I$,$II$,and $III$. The student is successful if they pass in tests ($I$ and $II$) $OR$ ($I$ and $III$). The probabilities of the student passing in tests $I$,$II$,and $III$ are respectively $p$,$q$,and $1/2$. If the probability of the student being successful is $1/2$,then:

The probability of an impossible event,i.e.,$P(\phi)$,is

The probability of happening at least one of the events $A$ and $B$ is $0.6$. If the events $A$ and $B$ happen simultaneously with a probability of $0.2$,then $P(\bar{A}) + P(\bar{B}) = $

Two students Anil and Ashima appeared in an examination. The probability that Anil will qualify the examination is $0.05$ and that Ashima will qualify the examination is $0.10$. The probability that both will qualify the examination is $0.02$. Find the probability that both Anil and Ashima will not qualify the examination.

The probability of drawing a white ball from a bag containing $3$ black balls and $4$ white balls is: