How Many Distinguishable Horizontal Arrangements of All the Letters in BOOKS

question 32

Short Answer

How many distinguishable horizontal arrangements of all the letters in BOOKS are possible?

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Definitions:

Corrosion

The process of deterioration and consumption of a material through a chemical reaction with its environment, often leading to weakening or destruction of the material.

Concentrated Lye

A highly caustic solution, often sodium hydroxide, used for cleaning, unblocking drains, and making soap.

Accidental Spillage

Unintended release or leak of substances, which could be hazardous or non-hazardous, due to mishandling or accidents.

First-listed Diagnosis

The primary medical condition diagnosed during a healthcare visit, determining the primary reason for the encounter.