If the number 517 * 324 is completely divisible by 3, then the smallest whole number in the place of * will be:
|
The Probability that a number selected at random from the first 50 natural numbers is a composite number is: |
Answer |
|
A coin tossed live times. What is the probability that there is at least one tail? |
Answer |
|
If a number is chosen at random from the set {1,2,3,……100}, then the probability that the chosen number is a perfect cube is? |
Answer |
|
If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is? |
Answer |
|
Three 6 faced dice are thrown together. The probability that all the three show the same number on them is? |
Answer |
|
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. |
Answer |
|
A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that atleast one bulb is good |
Answer |
|
A bag contains 2 yellow, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue? |
Answer |
|
One year ago Jaya was four times as old as her daughter Nikitha. Six years hence, Mrs.Jayas age will exceed her daughters age by 9 years. The ratio of the present ages of Jaya and her daughter is : |
Answer |
|
Five years ago, the total of the ages of a father and his son was 40 years. The ratio of their present ages is 4 : 1. What is the present age of the father? |
Answer |