Find the probability of each event when a die is rolled once

Find the probability of getting a head when a coin is tossed once. Also find the probability of getting a tail.

In a box there are 3 green and 7 white balls. Two balls are drawn from it without replacement. Find the probability of an event that selected second ball is green when selected first ball is also green.

Person (A) speaks truth in 70% of cases and (B) in 80 % of cases. Find the probability of an event that in what percentage of cases are they likely to contradict each other?

Given that the two numbers appearing on throwing two dice are different. Find the probability of the event 'the sum of numbers on the dice is 4'.

If (2)/(11) is the probability of an event, what is the probability of the event 'not' A'.

10% items are defective manufactured by one company. Find the probability of an event that out of 8 items 2 items are defective.

A die is tossed thrice. Find the probability of getting an odd number at least once.

If 2/11 Is the probability of an event, what is the probability of the event 'not A'.

A die is thrown three times. Events A and B are defined as below: A : 4 on the third throw B : 6 on the first and 5 on the second throw Find the probability of A given that B has already occurred.

Consider the experiment of tossing a coin. If the coin shows head, toss it again but if it shows tail, then throw a die. Find the conditional probability of the event that the die shows a number greater than 4' given that there is at least one tail.