Q130. The expression nCr + nCr-1 is equal to which of the following, for 1 ≤ r ≤ n?Mathematics — Permutation, Combination and Probability — Question 130 of 302A. nCrB. n-1CrC. n+1Cr-1D. n+1CrPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →