In a staircase, there ar 10 steps. A child is attempting to climb the staircase. Each time she can either make 1 step or 2 steps. In how many different ways can she climb the staricase?\nOptions:\n(A) 23\n(B) 277\n(C) 18\n(D) 178\n(E) 181 Stream of consciousness first, then make a decision:
User
Use fibonnacci series, with starting two terms as 1, 2. So next terms are 3, 5, 8, 13, 21, 34, 55, 89
Thus, the answer is (B).
Assistant