# Solution - Probability - A Theoretical Approach

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ConceptProbability - A Theoretical Approach

#### Question

A student argues that ‘there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability 1/11. Do you agree with this argument?

#### Solution

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One card is drawn from a well-shuffled deck of 52 cards. Find the probability of getting

(i) a king of red colour

(ii) a face card

(iii) a red face card

(iv) the jack of hearts

(vi) the queen of diamonds

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Complete the following statements:

The sum of the probabilities of all the elementary events of an experiment is _________.

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(i) Write down all the possible outcomes and complete the following table:

 Event :‘Sum on 2 dice’ 2 3 4 5 6 7 8 9 10 11 12 Probability 1/36 5/36 1/36
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(ii) 5 will come up at least once?

[Hint: Throwinga die twice and throwing two dice simultaneously are treated as the same experiment].

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#### Reference Material

Solution for concept: Probability - A Theoretical Approach. For the course 8th-10th CBSE
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