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How many permutations can be made out of the letters of the word TRIANGLE ? How many of these will begin with T and end with E ?

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AAKASH INSTITUTE ENGLISH-PERMUTATIONS AND COMBINATIONS -Try Yourself
  1. Find the number of words formed by permuting all letters of the word I...

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  2. Find the number of different words formed with the letters of the word...

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  3. How many permutations can be made out of the letters of the word TRIAN...

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  4. Find out number of permutations that can be had from the letters of th...

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  5. How many numbers greater than 50,000 can be formed by using the digits...

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  6. How many numbers greater than a million can be formed by using the dig...

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  7. In how many ways can the letters of the word INSURANCE be arranged , s...

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  8. In how many ways can the letters of the word PATLIPUTRA be arranged, s...

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  9. The letters of word ZENITH are written in all possible ways. If all ...

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  10. If all the permutations of the lettters of the word INDIA are arranged...

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  11. Evaluate : ""^(75)C(73)

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  12. Evaluate : ""^(13)C(10)

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  13. Find n if ""^(n)C(4)=""^(n)C(6)

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  14. If ""^(n)C(10)=""^(n)C(13) , then find the value of ""^(n)C(2)

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  15. If ""^(15)C(x)=""^(15)C(x+3) , then find the value of X.

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  16. Find ""^(18)C(3)+^(18)C(2)

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  17. Verify that ""^(9)C(5)+""^(9)C(4)=""^(10)C(5)

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  18. If .^(n)C(r-1): .^(n)C(r): .^(n)C(r+1)=3:4:5, find the values of n and...

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  19. Prove that : (""^(n)C(r+1))/(""^(n)C(r))=(n-r)/(r+1)

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  20. In how many ways a committee of 7 members can be selected from 10 memb...

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