Q186. A teacher asks 7 children in her class, including a pair of non-identical twins, to form a line. If the twins must always stand together, how many different arrangements are possible?Mathematics — Permutation, Combination and Probability — Question 186 of 302A. 120B. 720C. 1440D. 5040Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →