Q.

Four cards are drawn at random from a pack. The probability that they are of the same colour is

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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

9217×49

b

2317×49

c

11325

d

14365

answer is A.

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Detailed Solution

2C1 26C4 52C4=9217×49
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Four cards are drawn at random from a pack. The probability that they are of the same colour is