Question

Number of ways in which 15 indistinguishable oranges can be put in 3 different boxes so that every box has at most 8 oranges

• A. 31
• B. 52
• C. 76
• D. 28

Answer 1

Answer: (B)

52

Answer 2

Find coefficient of x¹⁵ in (x⁰ + x¹ + x² +…..+ x⁸)³