Q19. If the coefficients of x2 and x3 in the expansion of (3 + kx)9 are equal, then the value of k is:Mathematics — Mathematical Inductions and Binomial Theorem — Question 19 of 95A. -9/7B. 9/7C. 7/9D. 4/3Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →