A ladder has 5 rungs. Elisabeth can climb up by 1 or 2 rungs at a time. In how many different ways can she climb up to the fifth rung of the ladder?
Answer Choices
A. 10
B. 9
C. 7
D. 6
E. 8
A ladder has 5 rungs. Elisabeth can climb up by 1 or 2 rungs at a time. In how many different ways can she climb up to the fifth rung of the ladder?
Answer Choices
A. 10
B. 9
C. 7
D. 6
E. 8