If the squares of a 8×8 chessboard are painted either red or black at random.
The probability that the chessboard contains equal number of red and black squares is
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two-digit number (ii) a perfect square number(iii) a number divisible by 5.
Describe the sample space for the indicated experiment : A coin is tossed and then a die is rolled only in case a head is shown on the coin.
Refer to Example 13. (i) Complete the following table (ii) A student argues that 'there are 11 possible outcomes 2,3,4,5,6,7.8,9,10,11 and 12. Therefore, each of them has a probability 111. Do you agree with this argument? Justify
The probability that a student will pass the final examination m both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75, what is the probability' of passing the Hindi examination?
A bag contains lemon flavoured candies only. Malini takes out one candy without looking into the bag. What is the probability that she takes out(i) an orange flavoured candy?(ii) a lemon flavoured candy?
An um contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the um and then a ball is drawn at random. What is the probability that the second ball is red?
Consider a sample space S representing the adults in a small town who have completed the requirements for a college degree. They have been categorized according to sex and employment as follows: , Employed, Unemployed Male, 460, 40 Female, 140, 260 An employed person is selected at random. Find the probability that the chosen one is a male.