About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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There are 20 feet of blood vessels in each square inch of human skin.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Additive Color Mixing
How to solve a linear system when the variable is in the denominator position (Question 1 of 2)
How to solve word problems with two unknowns (Question 4)
How to use Cramer's rule to solve a second-order determinant (Question 2)
Language and Color Perception
People with normal color vision see the number 29 in the chart; however, those who are color-blind c