Permutations And Combinations

Question
CBSEENMA11014139

How many 3 letter words can be formed from the letter of the word ‘ORIENT’ ? How many of these words contain T?

Solution

Solution not provided.
Ans. 120; 60

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Some More Questions From Permutations and Combinations Chapter

Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.