If some three consecutive coefficients in the binomial expansion of $(x+1)^n$ in powers of $x$ are in the ratio $2: 15: 70$, then the average of these three coefficients is:
Hello 👋 Welcome to Competishun – India’s most trusted platform for JEE & NEET preparation. Need help with JEE / NEET courses, fees, batches, test series or free study material? Chat with us now 👇
