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How many four digit numbers are there in...

How many four digit numbers are there in all?

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Write the largest and the smallest 7-digit number and also find how many 7-digit numbers are there in all.

AAKASH INSTITUTE ENGLISH-PERMUTATIONS AND COMBINATIONS -Try Yourself
  1. In how many ways, the letters of word FRACTION can be arranged ?

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  2. How many numbers lying between 100 and 1000 can be formed with the dig...

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  3. How many four digit numbers are there in all?

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  4. How many permulations of the letters of the word KARNAL are there ?

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  5. How many words can be formed using the letters E twice , the letter C ...

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  6. Find the number of words formed by permuting all letters of the word I...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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