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

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

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The correct Answer is:
r=4
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PREMIERS PUBLISHERS-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^(2)) find r

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  3. Suppose 8 people enter an event in a swimming meet. In how many ways c...

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  4. Three men have 4 coats, 5 waist coats and 6 caps. In how many ways can...

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

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

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

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

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

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

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

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  12. 8 woman and 6 man are standing in a line. (i) How many arrangement...

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  13. 8 woman and 6 man are standing in a line. (i) How many arrangement...

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  14. 8 woman and 6 man are standing in a line. (i) How many arrangement...

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

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

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

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

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

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

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