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Find the number of strings that can be ...

Find the number of strings that can be made using all letters of the word THING. If these words are written as in a dictionary , what will be the ` 85^(th)` string ?

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The correct Answer is:
1! `85^(th)`string is NIGHT
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SURA PUBLICATION-COMBINATORICS AND MATHEMATICAL INDUCTION -Exercise 4.2
  1. If .^(n-1) P(3) : P(4) = 1 , 10 find n.

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  2. IF .^(10) P(r-1) = 2xx 6P(r) find r

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  3. (i) Suppose 8 people enter an event in a swimming meet. In how m...

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  4. Determine the number of permutations of the letters of the word SIMPL...

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  5. A test consists of 10 multiple choice questions . In how many ways ...

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  6. A student appears in an objective test which contain 5 multiple choi...

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  7. How many strings can be formed from the letters of the word ARTICLE,...

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  8. 8 woman and 6 man are standing in a line. (i) How many arrangement...

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  9. Find the distinct permutations of the letters or the word MISSISSIPP...

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  10. How many ways can the product a^(2) b^(3) c^(4) be expressed witho...

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  11. In how many ways 4 mathematics books , 3 physics books, 2 chemistry...

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  12. In how many ways can the letters of the word SUCCESS be arranged ...

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  13. A coin is tossed 8 times. (i) How many different sequences of ...

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  14. How many strings are there using the letters of the word INTERMEDIAT...

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  15. Each of the digits 1,1,2,3,3 and 4 is written on separate card. The ...

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  16. If the letters of the word GARDEN are permuted in all possible ways ...

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  17. Find the number of strings that can be made using all letters of th...

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  18. if the letters of the word FUNNY are permuted in all possible ways a...

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  19. Find the sum of all 4-digit numbers that can be formed using digits 1,...

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  20. Find the sum of all 4-digit numbers that can be formed using digits...

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