Finding the Number of Lines from A to B in a 4x7 Rectangle

[mocogi]

Homework Statement

The number of lines from A to B if you must travel along the lines going up and right is...
(there is a rectangle with that has 4 cubes going down vertically and 7 horizontally (4x7) and a is at the bottom left, be is at the top right)

 

[LCKurtz]

Homework Statement

The number of lines from A to B if you must travel along the lines going up and right is...
(there is a rectangle with that has 4 cubes going down vertically and 7 horizontally (4x7) and a is at the bottom left, be is at the top right)

Hello mocogi. Welcome to the Forum. Normally to receive help in this forum you are expected to show what thought or work you have applied to your problem.

I suppose you mean "squares" instead of cubes. I will give you a little hint. Considering each move to the right or up as a "step", how many total steps do you need? How many ways can you choose which steps to use for the up moves?