The following histogram represents the number of pages in each book within a collection.What is the frequency of books containing at least 250 but fewer than 400 pages? 
Definitions:
TURP
Stands for Transurethral Resection of the Prostate, a surgical procedure used to treat urinary problems due to an enlarged prostate.
Lubricating Fluid
A substance applied to minimize friction between surfaces in contact, reducing wear or heat generation.
Smegma
A whitish substance that can accumulate under the foreskin in males or around the clitoris and labia minora in females, composed of dead skin cells, oil, and moisture.
Sexually Transmitted Infections
Infections that are primarily spread through sexual contact, including viruses, bacteria, and parasites, affecting both men and women's health.
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