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If a, b, c are the number of functions, ...

If a, b, c are the number of functions, injections, constant functions from a set containing 3 elements into a set containing 6 elements respectively then the ascending order of a, b, c is

A

a,b,c

B

b,c, a

C

c, b, a

D

c, a, b

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The correct Answer is:
C
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-PRACTICE EXERCISE
  1. Ravish writes letters to his five friends and addresses the correspond...

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  2. Statement-I : The number of ways of arranging the letters of the word ...

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  3. If a, b, c are the number of functions, injections, constant functions...

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  4. Match the following {:("Word","Number of permutations by using all t...

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  5. Assertion (A) : There are three doors to a room. The number of ways in...

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  6. If ""^(35)C(n+7)=""^(35)C(4n-2), then all the values of n are given by

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  7. IF ""^(15)C(r+3)=""^(15)C(2r-3), then r=

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  8. ""^(n-2)C(r)+2.""^(n-2)C(r-1)+""^(n-2)C(r-2) is equal to

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  9. If ""^(18)C(r)=""^(18)C(r+2) then ""^(R )C(5)=

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  10. If ""^(n)C(4)=""^(n)C(8), then ""^(n)C(2) is

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  11. ""^(29)C(5)+sum(r=0)^(4)""^((33-r))C(4)=

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  12. ""^(15)C(8)+""^(15)C(9)-""^(15)C(6)-""^(15)C(7) is equal to

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  13. If ""^(18)C(15)+2(""^(18)C(16))"+"^(17)C(16)+1=""^(n)C(3) then n is

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  14. ""^(14)C(4)+sum(j=1)^(4)""^((18-j))C(3) is equal to

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  15. If p and q are the greatest values of ""^(2n)C(r) and ""^(2n-1)C(r) re...

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  16. If ""^(n+1)C(3)=4(""^(n)C(2)), then n is equal to

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  17. ""^(2n)C(2)-2""^(n)C(2)=

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  18. The least positive integral value of x which satisfies the inequality ...

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  19. The least value of the natural numbar 'n' satisfying C(n,5)+C(n,6)gtC(...

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  20. If ""^(n)C(r-1):""^(n)C(r):""^(n)C(r+1)=2:4:5 then (n,r) is

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