0 votes 0 votes 1) in how many ways one can enter hexagonal room having door on each wall that he exits from some different door? 2)how many tricolor flag can be designed from the rainbow color? Pooja Palod asked Dec 14, 2015 Pooja Palod 1.8k points 673 views answer comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes 1) For choosing an entrance we have $\binom{6}{1}$ choices, and for corresponding exits, we have$\binom{5}{1}$ choices. So total ways = 6 * 5 = 30 2) Rainbow has 7 colors. We need 3 colors to form a tricolor flag. So total tricolor flags possible = $\binom{7}{3}$ * 3! = 210 just_bhavana answered Oct 2, 2017 just_bhavana 1.5k points comment Share See all 0 reply Please log in or register to add a comment.