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A box contains 20 cards marked with numb...

A box contains 20 cards marked with numbers 1 to 20. One card is drawn at random. Write the event A using the number on the card is multiple of 4. Write S, n(S), A and n(A).

Text Solution

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The correct Answer is:
S = { 1, 2, 3, 4, ......, 20}, n (S) = 20,
A = {4, 8, 12, 16, 20} , n (A) = 5
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Knowledge Check

  • There are 50 cards marked 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 ?

    A
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    B
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    C
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    D
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