There are four pens: Red, Green, Blue and Purple in a desk drawer of which two pens are selected at random one after the other with replacement. State the sample space and the following events. A: Selecting at least one red pen.

Two coins are tossed simultaneously . Write the sample space (S), n(S), the following event A using set notation and n(A), where 'A is the event of getting at least one head .

A box contains 5 red, 8 blue and 3 green pens. Rujuta wants to pick a pen at random. What is the probability that the pen is blue?

A bag contains 4 red balls, 8 white balls, 5 green balls and 7 black balls all of the same size. One ball is picked up at random from the bag. Complete the following activity to find the probability of the following events. (i) Event A : the ball picked up is black. (ii) Event B : the ball picked up is not green. (iii) Event C : the ball picked up is white. Total number of balls : n(S) =24 n(A) =...... , P(A) = n(A)/n(S)=.....

A bag contains 4 red balls, 8 white balls, 5 green balls and 7 black balls all of the same size. One ball is picked up at random from the bag. Complete the following activity to find the probability of the following events. (i) Event A : the ball picked up is black. (ii) Event B: the ball picked up is not green. (iii) Event C: the ball picked up is white. Total number of balls : n(S) =24 n(B) =...... P(B) = n(B)/n(S)=......

A bag contains 4 red balls, 8 white balls, 5 green balls and 7 black balls all of the same size. One ball is picked up at random from the bag. Complete the following activity to find the probability of the following events. (i) Event A : the ball picked up is black. (ii) Event B: the ball picked up is not green. (iii) Event C: the ball picked up is white. Total number of balls : n(S) =24 n(C) =...... P(C) = n(C)/n(S)=......