Question

The co-efficients of x^p and x^q (p and q are positive integers) in the expansion of (1 + x)^p+q are

• A. Equal
• B. Equal with opposite signs
• C. Reciprocals to each other
• D. None of these

Answer 1

Answer: (A)

Equal

Answer 2

The coefficients of x^p and x^q are $p + qC_{p}and^{p + q}C_{q}$both of which will be equal