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

question 82

Short Answer

The figure at the right shows a 4-block by 5-block grid of streets. Find the number of ways in which you can go from point A to point B , where at each stage you can only go right or up. (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:

Split-Brain Operations

Surgical procedures on the brain that involve severing the corpus callosum, often performed to reduce epileptic seizures, affecting the communication between the two hemispheres of the brain.

Left-Handedness

The preference for using the left hand for tasks such as writing and eating, exhibited by approximately 10% of the population.

Sympathetic Division

Part of the autonomic nervous system that prepares the body for physical activity by accelerating heart rate, constricting blood vessels, and raising blood pressure.

Myelin Sheath

An insulating layer, or sheath, composed of protein and fatty substances, that surrounds the nerve cells' axons, facilitating rapid electrical impulses.