Probability CBSE Questions & Answers

Probability

This is Mathematics Class 09 Probability CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
One card is drawn from a well-shuffled deck of 52 cards. The probability of drawing an ace is
  • A
    \({1 \over {13}}\)
    Correct
  • B
    \({1 \over {26}}\)
  • C
    \({1 \over {13}}\)
  • D
    \({1 \over {52}}\)
2
1000 tickets of a lottery were sold and there are 5 prizes on these tickets. If Ruchi purchased one lottery ticket, the probability of winning prize is
  • A
    \({1 \over {100}}\)
  • B
    \({1 \over {200}}\)
    Correct
  • C
    \({1 \over {300}}\)
  • D
    None of these
3
a die is thrown once. The probability of getting a number 3 or 4 is
  • A
    \({2 \over 3}\)
  • B
    1
  • C
    0
  • D
    \({1 \over 3}\)
    Correct
4
A die is thrown once. The probability of getting a number greater than 3 is
  • A
    \({2 \over 3}\)
  • B
    \({1 \over 3}\)
  • C
    0
  • D
    \({1 \over 2}\)
    Correct
5
Two coins are tossed simultaneously. The probability of getting at least one head is
  • A
    \({1 \over 4}\)
  • B
    \({3 \over 4}\)
    Correct
  • C
    0
  • D
    \({1 \over 2}\)
6
The probability of getting 53 Sundays in a leap year is
  • A
    \({3 \over 7}\)
  • B
    \({1 \over 7}\)
  • C
    \({3 \over 7}\)
  • D
    \({2 \over 7}\)
    Correct
7
A marble is drawn at random from a bag. If the bag contains 6 blue and 4 green marbles, the probability that the marble is green, is
  • A
    \({2 \over 5}\)
    Correct
  • B
    \({4 \over 5}\)
  • C
    \({1 \over 10}\)
  • D
    \({1 \over 5}\)
8
Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, is
  • A
    \({1 \over 20}\)
  • B
    \({3 \over 20}\)
  • C
    \({5 \over 20}\)
  • D
    \({9 \over 20}\)
    Correct
9
If the probability of winning a game is 0.3, the probability of losing it is
  • A
    None of these
  • B
    0.5
  • C
    0.7
    Correct
  • D
    0.2
10
Two dice are thrown simultaneously. The probability of getting a doublet or a total of 4 is
  • A
    \({4 \over 9}\)
  • B
    \({3 \over 9}\)
  • C
    \({5 \over 9}\)
  • D
    \({2 \over 9}\)
    Correct
11
A bag contains 5 red balls and some blue balls. The probability of drawing a blue ball is double that of a red ball. The number of blue balls in the bag is
  • A
    5
  • B
    10
    Correct
  • C
    30
  • D
    20
12
A bag contains 12 balls, out of which x are white. One ball is drawn at random. If 6 more white balls are put in the bag, the probability of drawing a white ball will be double than that of the probability of drawing a white ball. Then, the value of x is
  • A
    4
  • B
    5
  • C
    3
    Correct
  • D
    6
13
Cards marked with the numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this bag. The probability that the number of the card is a prime number less than 20 is
  • A
    \({3 \over {25}}\)
  • B
    \({3 \over {25}}\)
  • C
    \({1 \over {5}}\)
  • D
    \({2 \over {25}}\)
    Correct
14
The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. One card is selected from the remaining cards. The probability of getting a club is
  • A
    \({{13} \over {49}}\)
  • B
    \({{3} \over {49}}\)
  • C
    \({10 \over {49}}\)
    Correct
  • D
    \({{1} \over {49}}\)
15
Two dice are thrown simultaneously. The probability of getting a multiple of 2 on one die and a multiple of 3 on the other one is
  • A
    \({{1} \over {12}}\)
  • B
    \({{5} \over {36}}\)
  • C
    \({{5} \over {12}}\)
  • D
    \({{11} \over {36}}\)
    Correct