Q51. The coefficient of x10 in the expansion of 1 + (1 + x) + (1 + x)2 + ... + (1 + x)20 is:Mathematics — NUST Mock 6 — Question 51 of 200A. 19C9B. 20C10C. 21C11D. 22C12Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →