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There are 20 cards. Ten of these cards h...

There are 20 cards. Ten of these cards have the letter `"I"` printed on them and the other 10 have the letter `"T"` printed on them. If three cards picked up at random and kept in the same order, the probability of making word IIT is

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If there are 15 cards of these 10 have the letter "I" printed 5 have the letter "T" printed. If 4 cards are picked at random one after the another and kept in the same order, the probability of making the word "IIIT" is (A) (10)/(91) (B) (15)/(91) (C) (20)/(91) (D) (25)/(91)

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