Probability
Box A contains 30% first grade articles. Box B contains 40% first grade articles. One article is draw from each box. Then the probability that both articles drawn are first grade is
1) 1 / 25
2) 3 / 25
3) 7 / 25
4) 9 / 25
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 Solution : -. |
Probability
A letter is chosen at random from the word “probability”. The probability that it is a vowel is
1) 1 / 11
2) 2 / 11
3) 3 / 11
4) 4 / 11
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 4 Solution : -. |
Probability
Two dice are tossed. The probability that the total sum is a prime number is:
1) 1 / 6
2) 5 / 12
3) 1 / 2
4) 7 / 9
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 Solution : -. |
Probability
A game consists of tossing a one rupee coin 3 times and noting its outcome each time. Hanif wins if all the tosses give the same result i.e., three heads or three tails, and loses otherwise. Calculate the probability that Hanif will lose the game.
1) 1 / 4
2) 1
3) 3 / 4
4) 0
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Probability
There are 50 cards maked with the numbers 1 to 50. One card is drawn at random. What is the probability that number on the card is a prime number ?
1) 3 /10
2) 1 / 5
3) 1 / 4
4) 2 /15
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Probability
Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and other is a heart, is :
1) 3 / 20
2) 29 / 34
3) 47 / 100
4) 13 / 102
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 4 Solution : -. |
Probability
In a single throw of three dice, the probability of getting a total of 17 or 18 is
1) 53/54
2) 51/54
3) 1/54
4) 0
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Probability
There are 30 cards of the same size in a bag on which natural numbers 1 to 30 are written. One card is taken out of the bag at random. Then the probability that the number on the selected card is not divisible by 3 is
1) 1 / 3
2) 3 / 4
3) 2 / 3
4) 1 / 4
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Probability
A die is thrown twice. The probability that 5 will not come up either of the time is :
(1) 35/36
(2) 25/36
(3) 1 / 36
(4) 11/36
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 Solution : -. |