Mathematics
Grade-4-
Easy

Question

The chance of throwing 6 with an ordinary dice is_______.

  1. 2 over 6
  2. 5 over 6
  3. 1 over 6
  4. 3 over 2

Hint:

We have to find the probability of getting 6 when a dice is thrown. First we will find the total number of outcomes, then we will find the number of possible outcomes i.e. number of time 6 can come. Further we will find the probability by dividing number of possible outcomes by total outcomes.

The correct answer is: 1 over 6


    Total no. of outcome = 6
    no. of possible outcome = 1
    Probability =1 over 6
    So, the chance of throwing 6 with an ordinary dice is 1 over 6.

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    A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, then the number of blue balls in a bag is:

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rightwards double arrow x space space space space equals 1 third
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rightwards double arrow P cross times 1 equals space 5 cross times 3
rightwards double arrow P space space space space space space equals space 15
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    Let the probability of getting balls be x.
    Then the probability of getting blue ball = 2x
    As we know the sum of probability of all the possible outcomes is 1.
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    Among the following that cannot be a probability is

    TO FIND-
    Which of the given options can not be used to denote probability.
    SOLUTION-
    a. 10%
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    b. 10
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    10-10 = 1/1010 = 0.0000000001
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    1/10 = 0.1
    Since we know that probability is always a number between 0 and 1, the only option that does not satisfy this condition is option b i.e. 10 because it is greater than 1.
    FINAL ANSWER-
    Option 'b' i.e. '10' is the correct answer to the given question.

    Among the following that cannot be a probability is

    MathematicsGrade-4-
    TO FIND-
    Which of the given options can not be used to denote probability.
    SOLUTION-
    a. 10%
    10% = 10/100 = 0.1
    b. 10
    c. 10 to the power of negative 10 end exponent
    10-10 = 1/1010 = 0.0000000001
    d. 1 over 10
    1/10 = 0.1
    Since we know that probability is always a number between 0 and 1, the only option that does not satisfy this condition is option b i.e. 10 because it is greater than 1.
    FINAL ANSWER-
    Option 'b' i.e. '10' is the correct answer to the given question.
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    Certain means there’s a ________ chance than an event will happen.

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    A certain event is an event which is sure to happen. The probability of an event is 1 if the number of favourable outcome is equal to the number of total outcomes.
    This means that there js 100 percent chance that the event will take place.
    Hence, the correct option is (b).

    Certain means there’s a ________ chance than an event will happen.

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    Here, we need to find the probability of a certain event.
    A certain event is an event which is sure to happen. The probability of an event is 1 if the number of favourable outcome is equal to the number of total outcomes.
    This means that there js 100 percent chance that the event will take place.
    Hence, the correct option is (b).
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    If we toss a coin, then the probability of getting tails is_____.

    Here, we have to find the probability of getting tails when a coin is tossed.
    Possible outcomes are Head (H) and tail (T) i.e (H, T)
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    Number of favourable outcome = Number of tail = 1
    Therefore, P(getting tail) = 1/2
    Hence, the correct option is (b).

    If we toss a coin, then the probability of getting tails is_____.

    MathematicsGrade-4-
    Here, we have to find the probability of getting tails when a coin is tossed.
    Possible outcomes are Head (H) and tail (T) i.e (H, T)
    Total number of outcomes = 2
    Number of favourable outcome = Number of tail = 1
    Therefore, P(getting tail) = 1/2
    Hence, the correct option is (b).
    parallel

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