If the coefficient of x^2 and x^3 in the expansion of (3+ax)^9 be same, then the value of a is

JEE Main Mathematics question

If the coefficient of and in the expansion of be same, then the value of is

Answer: (D)

The coefficient of is and that of is

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-020936