BITSAT2020MathematicsPermutation and CombinationActual
If 16 identical pencils are distributed among 4 children such that each gets at least 3 pencils. The number of ways of distributing the pencils is
Options
- A15
- B25
- C35
- D40
Correct answer
C. 35
Step-by-step solution
Required number of ways = coeff. of x¹⁶ in (x³+x⁴+x⁵+x⁶+x⁷ )⁴