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10 different letters of an alphabet are ...

10 different letters of an alphabet are given. Words with 5 letters are formed from these given letters then the numbers of words which have atleast one letter represent is:

A

69760

B

30240

C

99748

D

99784

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The correct Answer is:
A
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MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS -OBJECTIVE TYPE QUESTIONS (A) MULTIPLE CHOICE QUESTIONS
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  5. In an examination there are three multiple choice questions and each q...

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  6. If 1/(9!)+1/(10!)=x/(11!) then x=

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  7. L.C.M. of 3!, 4! And 5! Is :

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  8. 7!-5! is equal to :

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  9. The value of f(4) - f(3) is

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  10. If 1/(8!)+1/(9!)=x/(10 !),find x

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  11. The correct match of the following is : {:(,"Column - I",,"Column ...

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  12. The correct match of the following is : {:(,"Column I",,"Column II...

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  13. (7!) / (5!) is :

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  14. The value of |ul(4)-|ul(3) is :

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  15. If ""^(n)C(12)=""^(n)C(8), then n is equal to

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  16. The number of all numbers having 5 digits, with distinct digits, is :

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  17. The number of words that can be formed by using all the letters of the...

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  18. Given five line segments of length 2, 3, 4, 5, 6 units. Then the numb...

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  19. How many numbers greater than 10 lacs be formed from 2,3,0,3,4,2,3? 42...

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  20. The remainder obtained when 1!+2!+3!+……+11! is divided by 12 is :

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