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There are unlimited number of ident...

There are unlimited number of identical balls of four different colours . How arrangements of atmost 7 balls in a row can be made by using them ?

A

2399976

B

21844

C

630624

D

181440

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1A (PERMUTATIONS )
  1. The total number of seven digit numbers so that the sum of dig...

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  2. Find the number of numbers less than 2000 that can be formed using the...

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  3. There are unlimited number of identical balls of four differen...

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  4. The number of numbers greater than 1000 but not greater than ...

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  5. An n- digit number is a positive number with exctly n digits ...

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  6. The number of quadratic expressions with the coefficients drawn ...

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  7. A three digit number n is such that the last two digits of it ...

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  8. Eight different letters of an alphabet are given . Words of f...

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  9. ten different letters of alphabet are given . Words with 5 lett...

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  10. The number of four letter words using the letters of the word ...

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  11. The number of 4 letter words that can be formed with the letters in th...

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  12. The number of four digits telephone numbers having atleast one ...

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  13. The number of number between 1 and 10 ^(10) which contain the d...

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  14. The number of three digits number of the form xyz with x lt y, z...

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  15. A telegraph post has 5 arms . Each arm is capable of four disti...

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  16. There are 3 candidates for a professorship and one is to electe...

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  17. A guardian with 5 wards wishes everyone of them to study eith...

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  18. 3 letters are to be posted in 5 letter boxes in a part of the ...

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  19. Each of the five questions in a multiple choice test has 4 p...

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  20. The number of ways in which 7 distinct toys can be distributed ...

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