Question: A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If four marbles are picked at random, what is the probability that none is blue?

• 1. 17/91
• 2. 33/91
• 3. 51/91
• 4. 65/91

Question: A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.

• 1. 6/63
• 2. 2/63
• 3. 125/126
• 4. 1/126

Question: A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective.

• 1. 62/63
• 2. 125/126
• 3. 1/63
• 4. 1/126

Question: Three 6 faced dice are thrown together. The probability that exactly two dice show the same number on them is -.

• 1. 5/9
• 2. 5/12
• 3. 1/36
• 4. 7/12

Question: Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is__________?

• 1. 7/12
• 2. 5/9
• 3. 1/36
• 4. 5/12

Question: Three 6 faced dice are thrown together. The probability that all the three show the same number on them is -.

• 1. 1/216
• 2. 1/36
• 3. 5/9
• 4. 5/12

Question: A basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is__________?

• 1. 25/42
• 2. 9/20
• 3. 10/23
• 4. 41/42

Question: A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.

• 1. 8/15
• 2. 2/5
• 3. 3/5
• 4. 7/15

Question: If six persons sit in a row, then the probability that three particular persons are always together is____________?

• 1. 1/20
• 2. 3/10
• 3. 1/5
• 4. 4/5

Question: If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is__________?

• 1. 19/52
• 2. 17/52
• 3. 5/13
• 4. 4/13