Probability Test

Probability

This is Probability Test-05 for CBSE class 10 Maths.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the following can not be the probability of an event?
  • A
    \(0.1\)
  • B
    \(\frac{1}{3}\)
  • C
    \(\frac{{17}}{{16}}\)
    Correct
  • D
    \(5\% \)
2
If the probability of an event is ‘p’, the probability of its complementary event will be
  • A
    p
  • B
    1 – p
    Correct
  • C
    p – 1
  • D
    \(1 - \frac{1}{p}\)
3
A child’s game has 8 triangles of which 5 are blue and rest are red and 10 squares of which 6 are blue and the rest are red. One piece is lost at random. The probability that it is a square of blue colour is
  • A
    \(\frac{1}{3}\)
    Correct
  • B
    \(\frac{4}{9}\)
  • C
    \(\frac{6}{{10}}\)
  • D
    \(\frac{2}{3}\)
4
A bag contains 50 balls of which 2x are red, 3x are white and 5x are blue. A ball is selected at random. The probability that it is not white is
  • A
    \(\frac{7}{{10}}\)
    Correct
  • B
    \(\frac{2}{5}\)
  • C
    none of these
  • D
    \(\frac{3}{5}\)
5
The probability of getting a sum of 13 in a single throw of two dice is
  • A
    0
    Correct
  • B
    \(\frac{5}{6}\)
  • C
    1
  • D
    \(\frac{1}{6}\)
6
A number ‘x’ is chosen at random from the numbers -4, -3, -2, -1, 0, 1, 2, 3, 4, 5. The probability that ׀x׀< 3 is
  • A
    \(\frac{7}{{10}}\)
  • B
    \(\frac{1}{2}\)
    Correct
  • C
    \(1\)
  • D
    \(0\)
7
The probability of guessing the correct answer to certain text questions is x / 12. If the probability of not guessing the answer is 5/8, then the value of x is
  • A
    4
  • B
    1
  • C
    0
  • D
    4.5
    Correct
8
Three coins are tossed once. The probability of getting two heads is
  • A
    \(\frac{3}{8}\)
    Correct
  • B
    \(\frac{1}{8}\)
  • C
    \(\frac{5}{8}\)
  • D
    \(\frac{1}{4}\)
9
The probability of getting a bad egg in a lot of 400 is 0.035. The number of bad eggs in the lot is
  • A
    21
  • B
    7
  • C
    28
  • D
    14
    Correct
10
An event is unlikely to happen. Its probability is closest to
  • A
    1
  • B
    0.1
  • C
    0.00001
    Correct
  • D
    0.0001
11
A die has its six faces marked 1, 2, 2, 2, 5, 6. The probability of getting 2 is
  • A
    \(\frac{1}{3}\)
  • B
    \(\frac{1}{4}\)
  • C
    \(\frac{1}{5}\)
  • D
    \(\frac{1}{2}\)
    Correct
12
A coin is tossed thrice. The probability of getting at least two tails is
  • A
    \(\frac{4}{5}\)
  • B
    \(\frac{2}{3}\)
  • C
    \(\frac{1}{2}\)
    Correct
  • D
    \(\frac{1}{4}\)
13
A game of chance consists of spinning an arrow which comes to rest pointing at one of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and these values are equally likely outcomes. The probability that it will point at a number greater than 5 is
  • A
    \(\frac{1}{4}\)
  • B
    \(\frac{1}{2}\)
    Correct
  • C
    \(\frac{1}{3}\)
  • D
    \(\frac{1}{5}\)
14
A girl has a cube one letter written on each face, as shown below: M, N, P, M, N, M The cube is thrown once. The probability of getting M is
  • A
    \(\frac{1}{3}\)
  • B
    \(\frac{1}{4}\)
  • C
    \(\frac{1}{2}\)
    Correct
  • D
    \(\frac{1}{5}\)
15
A letter is chosen at random from the word ‘ASSASSINATION’. The probability that it is a vowel is
  • A
    \(\frac{3}{{13}}\)
  • B
    none of these
  • C
    \(\frac{7}{{13}}\)
  • D
    \(\frac{6}{{13}}\)
    Correct