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Byju's Answer
Standard XII
Mathematics
Conditional Probability
Two cards are...
Question
Two cards are drawn from a well shuffled pack of 52 cards, one after another without replacement. Find the probability that one of these is red card and the other a black card?
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Solution
P
one red and one black
=
P
first red and second black
+
P
first black and second red
=
26
52
×
26
51
+
26
52
×
26
51
Without replacement
=
13
51
+
13
51
=
26
51
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