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A Box Contains 20 Cards Marked with Numbers 1 to 20. One Card is Drawn at Random. Event a is the Number of the Card Which is Multiple of 5. Write S, N(S), a and N(A). - Algebra

A box contains 20 cards marked with numbers 1 to 20. One card is drawn at random. Event A is the number of the card which is multiple of 5. Write S, n(S), A and n(A).

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Solution

S = {1,2,3,4,.......20}

n(S) = 20

A = The number on the card is multiple of 5

A = {5,10,15,20}

n(A) = 4

Concept: Concept Or Properties of Probability
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