Probability
The king, queen and jack of hearts are removed from a deck of 52 playing cards and then wellshuffled. One card is selected from the remaining cards. Then the probability of getting a king is
1) 1 / 49
2) 2 / 49
3) 3 / 49
4) 1
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |
Probability
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
1) 21 / 46
2) 25 / 117
3) 1 / 50
4) 3 / 25
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 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 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
A die is thrown twice. The probability of the sum being odd, is
1) 1 / 2
2) 1 / 3
3) 1 / 4
4) 1 / 6
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Probability
The probability of guessing the correct answer to a certain question is p/12. If the probability of not guessing the correct answer to the same question is 3/4, the value of p is
1) 3
2) 4
3) 2
4) 1
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Probability
Out of a day’s production, which is 1000 machine parts, 100 we re found to be sub-standard. The probability that a part se le cte d at random be ing up to the standard is
1) 1 / 10
2) 9 / 10
3) 2 / 10
4) 5 / 10
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 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
Probability that a non leap year should have 53 Mondays, will be
1) 2 / 7
2) 3 / 7
3) 1 / 7
4) 5 / 7
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |