The fiGure at the Right Shows a 4-Block by 5-Block

question 131

Short Answer

The figure at the right shows a 4-block by 5-block grid of streets.
to point B, where at each stage you can only go right or up.
Find the number of ways in which you can go from point A (You are not allowed to go left or down.) For example, one
allowable route from A to B is:
Right, Right, Up, Right, Up, Up, Right, Right, Up.

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Definitions:

Lateral Inhibition

A process in the nervous system where neural activity in one neuron inhibits the activity of neighboring neurons, enhancing contrast in sensory information.

Visual System

The part of the central nervous system that is responsible for processing visual information, consisting of the eyes, optic nerves, brain, and pathways that connect them.

Neurons

Specialized cells within the nervous system that transmit information to other neurons or cells through electrical and chemical signals.

Young-Helmholtz Theory

A theory of color vision that proposes the eye contains three types of color receptors, which are sensitive to red, green, and blue.