In how many ways can we distribute 10 identical pencil into 4 students so that each student get at least 1 pencil ?

• n=10 pencils, r=4 students,
  the number of ways of distributing n objects among r students are (n-1)C(r-1)
  9C3=84
• 11 years agoHelpfull: Yes(10) No(1)
• first of all give each student 1 pencil,then we are left with 6 pencil and each child has been provided 1 pencil.
  after that simply use the formula (n+r-1Cr-1)
  (6+4-1c4-1)=(9c3)=84
• 11 years agoHelpfull: Yes(1) No(1)
• first give one pencil to each student then,
  
  rest in 9c3 ways.
• 11 years agoHelpfull: Yes(0) No(0)