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RD SHARMA ENGLISH-PERMUTATIONS-All Questions
- Evaluate the following: \ ^5P3
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- Evaluate the following: P(15 ,3)
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- Evaluate the following: P(5,5)
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- If P(5, r)=2.P(6, r-1), find r.
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- If 10Pr=5040 , find the value of rdot
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- If 9P5+5^9P4=^(10)Pr , find the value of rdot
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- Prove the following: P(n , n)=2P(n , n-2)
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- Prove the following: P(n , r)=P(n-1, r)+rdotP(n-1,\ r-1)
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- Prove the following: P(n , n)=P(n , n-1)
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- Prove the following: P(n , r)=ndotP(n-1,\ r-1)
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- In how many ways three different rings can be worn in four fingers wit...
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- How many different signals can be made by 5 flags from 8 flags of d...
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- Three men have 4 coats, 5 waist coats and 6 caps. In how many ways c...
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- How many numbers lying between 100 and 1000 can be formed with the dig...
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- How many four digit numbers are there with distinct digits?
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- In how many ways 7 pictures can be hung from 5 picture nails on a wall...
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- The number of natural numbers smaller than 10^4 of which all digits ar...
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- How many words, with or without meaning, can be formed using all th...
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- Ten different letters of an alphabet are given. Words with five letter...
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- Evaluate each of the following: \ ^8P3
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