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In an election, the number of candidates...

In an election, the number of candidates is one greater than the persons to be elected. If a voter can vote in 254 ways, the number of candidates is a. `7` b. `10` c. `8` d. `6`

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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
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  2. In how many ways can 6 persons stand in a queue?

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  9. A team of four students is to be selected from a total of 12 studen...

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  10. If "^9P5+5*^9P4=^(10)Pr , find the value of r.

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  16. Find the number of zeros at the end of 130!.

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  18. Find the exponent of 3 in 100!

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  19. Number of ways in which two persons A and B select objects from two ...

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  20. If "^10 Pr=5040 , find the value of r.

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