GATE CSE
First time here? Checkout the FAQ!
x
+2 votes
73 views

In how many ways can 12 different( not same) coloured balls be distributed among 3 boys so that each gets atleast 1 ball?  ans:- 519156

asked in Combinatory by Junior (733 points)  
edited by | 73 views
Nice

1 Answer

+2 votes
Best answer

One way : S(12, 3) * 3!

See the link here

------------------------------------------

Other way: Principle of inclusion-exclusion

312 - [ $\binom{3}{1}$ * 212 - $\binom{3}{2}$ * 112]

= 519156

answered by Veteran (15.4k points)  
selected by


Top Users Sep 2017
  1. Habibkhan

    6970 Points

  2. Warrior

    2490 Points

  3. Arjun

    2368 Points

  4. rishu_darkshadow

    2136 Points

  5. A_i_$_h

    2004 Points

  6. nikunj

    1980 Points

  7. makhdoom ghaya

    1760 Points

  8. manu00x

    1756 Points

  9. Bikram

    1744 Points

  10. SiddharthMahapatra

    1718 Points


26,060 questions
33,669 answers
79,747 comments
31,080 users