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Find the total number of nine-digit numb...

Find the total number of nine-digit numbers that can be formed using the digits 2, 2, 3, 3, 5, 5, 8, 8, 8 so that the odd digit occupy the even places.

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CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
  1. A three-digit number is to be formed using the digits 0, 1, 2, 3, 4, a...

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  2. If N is the number of ways in which 3 distinct numbers canbe select...

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  3. Find the total number of nine-digit numbers that can be formed using t...

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  4. m men and n women are to be seated in a row so that no two ...

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  5. Ten different letters of an alphabet are given . Word with five letter...

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  6. If, ^n Cr=84 , and ^n C(r-1)=36,and ^n C(r+1)=126 , then find the val...

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  7. Eight chairs are numbered 1 to 8. Two women and three men wish to oc...

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  8. The value of expression .^47 C4+sum(j=1)^5.^(52-j)C3 is equal to a.....

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  9. The number of n digit numbers which consists of the digit 1 and 2 on...

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  10. If ""^n C3+ ""^n C4 > ""^(n+1)C3 , then a. n >6 b. n >7 c. n...

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  11. The value of sum(r=0)^(n-1) (""^nCr)/(""^nCr+ ""^n C(r+1)) equals a....

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  12. A bag contains four one-rupee coins, two twenty-five paisa coins, a...

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  13. There are four letters and four directed envelopes. The number of w...

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  14. Kanchan has 10 friends among whom two are married to each other. She...

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  15. Number of ways in which three numbers in A.P. can be selected from ...

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  16. The total number of positive integral solution of 15 < x1+x2+x3 lt= 20...

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  17. A train time table must be compiled for various days of the week, so t...

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  18. The streets of a city are arranged like the lines of a chess board. ...

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  19. A batsman scores exactly a century by hitting fours and sixes in 20...

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  20. In how many ways can 2t+1 identical balls be placed in three distinct ...

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