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Author Question: A committee of 4 is to be selected from a group of 12 people. How many possible committees can be selected? (Read 32 times) |
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.