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Question

Let there are 8 cards numbered 1 to 8, even numbered card is red coloured and odd numbered card is black coloured.
A card is selected at random,
Consider the following events:
A: The selected card is red and the number on the card is divisible by 5.
B: The selected card is black and the number on the card is divisible by 7
C: The selected card is red and the number on the card is divisible by 4
D: The selected card is black and the number on the card is divisible by 3.
Then which of the following statement(s) is are correct ?

A
A is impossible event.
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B
B and C are simple events.
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C
B and D are simple events.
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D
C is compound event.
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Solution

The correct option is D C is compound event.
Given : sample space S={2R,4R,6R,8R,1B,3B,5B,7B}
Here, RRed, BBlack
According to question,
A={ϕ}, (As, odd numbered card is black)
B={7B},
C={4R,8R}
D={3B}
We know, simple event have only one sample point in sample space.
and compound event consists more than one sample point.

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