.

#3930. 12 defective are accidentally mixed with 132 good ones. It is not possible to just look at the pen and tell whether or not it is defective. One pen is taken out at random from this lot. Determine the probability of the pen taken out is good one.

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#3929. A bag contains 8 red, 6 white, and 4 black balls. A ball is drawn at random from the bag. Find the probability of the drawn ball being neither white nor black.

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#3928. A bag contains 8 red, 6 white, and 4 black balls. A ball is drawn at random from the bag. Find the probability of the drawn ball being

(a) red or white

(b) not black.

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#3927. From a pack of 52 cards, jacks, queens, kings, and aces of red color are removed. From the remaining, a card is drawn at random. Find the probability of the card being drawn is (i) a black jack (ii) a picture card (jacks, queens, and kings are picture cards).

]]>.

#3926. From a pack of 52 cards, jacks, queens, kings, and aces of red color are removed. From the remaining, a card is drawn at random. Find the probability of the card being drawn is (i) a black queen (ii) a red card.

]]>The solution #3924 is correct. Keep it up, Monox D. I-Fly!

#3925. Five cards - ten, jack, queen, king, and an ace of diamonds are shuffled face downwards. One card is picked at random. If a king is drawn first and put aside, what is the probability of the second card being picked by the ace?

]]>The solution #3923 is correct. Excellent, Monox D. I-Fly!

#3924. Two unbiased dice are thrown. Find the probability of the sum on the dice is greater than 10.

]]>The solution #3922 is correct. Neat work, Monox D. I-Fly!

#3923. A number x is selected from the numbers 1, 2, and 3 and a second number y is randomly selected from the numbers 1, 4, and 9. What is the probability of the product xy of the two numbers being less than 9?

]]>The solution #3921 (both parts) is correct. Neat work, Monox D. I-Fly!

#3922. A jar contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability of it being green is 2/3. Find the number of blue marbles in the jar.

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#3921. A child has a block in the shape of a cube with one letter written on each face as shown below:

A B C D E A

The cube is thrown once. What is the probability of getting (i) A? (ii) D?