A boy is standing on a staircase. He
starts playing by walking up and down:
first he walks down 5 steps, then up 4 ...
On site from date of: 28 Jan 2009
Q
A boy is standing on a staircase. He
starts playing by walking up and down:
first he walks down 5 steps, then up 4
steps, down 7 steps, up 1 step, up 10
steps and finaly down 4 steps. Where is
our boy standing, in relation to the
step on which he started?
Open this question's test: