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The number of ways in which five dif...

The number of ways in which five different letters can be put in their five addressed envelopes so that all the letters are in the wrong envelopes is

A

10

B

30

C

44

D

17280

Text Solution

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
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  8. A Set contains 20 elements The number of subsets of the set wh...

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  9. A student is allowed to select atmost n books from a collection ...

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  10. A set contains (12) elements . The number of subsets of the set ...

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  11. How many mulitiples of 2 lie between 10 and 250?

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  12. If n objects are arranged in a row then the number of ways of s...

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  13. The position vector of a point p is r = x hati + y hatj + z ha...

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  14. Let a = hati + hatj + hatk and let r be a variable vector s...

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  15. The number of integers x,y,z, w such that x +y+z+w=20 and x , y,...

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  16. How many mulitiples of 3 lie between 10 and 250?

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  17. Sum of all three digit number ( no digits being zero ) having ...

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  18. In How many ways 4 sovereining be given aways when there are ...

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  19. The number of ways of selecting 10 balls out of an unlimited n...

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  20. The number of ways in which and examiner can assign 20 maks to...

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