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""^(15)P(8)=A+8.""^(14)P(7 )implies A=...

`""^(15)P_(8)=A+8.""^(14)P_(7 )implies A=`

A

`""^(14)P_(6)`

B

`""^(14)P_(8)`

C

`""^(15)P_(1)`

D

`""^(16)P_(9)`

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1A (PERMUTATIONS )
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  2. IF ""^(12)P(r )=""^(11)P(6)+6^(11)P5, then r=

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  3. ""^(15)P(8)=A+8.""^(14)P(7 )implies A=

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  4. IF ""^((m+n))P(2) =90 ,""^((m-n))P(2) =30 then (m,n)=

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  11. The number of arrangements that can be formed by taking all the ...

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  12. The number of arrangements that can be made by taking all the ...

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  13. The number of 5 letter arrangements that can be made from the le...

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  14. The number of arrangements by arranging the letters of the word ...

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  15. The number of arrangements by arranging the letters of the word ...

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  17. Find the number of 5 letter words that can be formed using the letters...

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