Find the probability of the dart hitting the board in the circular region B (i.e. ring B).

Without calculating, write the percentage of probability of the dart hitting the board in circular region C (i.e. ring C).

What is the probability that a randomly thrown dart hits the square board in shaded region (Take π = (22)/(7) and express in percentage)

(a) Write the probability of getting each number on the top face when a die was rolled in the following table. (b) Find the sum of the probabilities of all outcomes.

Find the probability of the events given in question 2. Question 2 is When a die is thrown, list the outcomes of an event of getting (i) (a) a prime number (b) not a prime number.

(i) Find the probability that a student obtained less than 20% in the mathematics test. (ii) Find the probability that a student obtained marks 60 or above.

What is the probability of a disc thrown on a chess-board, coming to rest on i] a white square? ii a black square on the border ?

A bag contains five green marbles, three blue marbles, two red marbles, and two yellow marbles. One marble is drawn out randomly. a) Are the four different colour outcomes equally likely? Explain. b) Find the probability of drawing each colour marble i.e. , P(green), P(blue), P(red) and P(yellow) c) Find the sum of their probabilities.

Three fair coins are tossed. Find the probability of getting a]. At least one head. b]. At most one head.

A die is thrown once. Find the probability of getting: (a) an even prime number (b) a multiple of 3

A and B are two independent witnesses (i.e., there is no collision between them) in a case. The probability that A will speak the truth is x and the probability that B will speak the truth is y. A and B agree in a certain statement. Show that the probability that the statement is true is (xy)/(1-x-y+2xy) .