Yes, double clits, or individuals with two clitoral structures, are real but extremely rare. This condition is often associated with intersex variations, where a person may have atypical reproductive or sexual anatomy. Cases of double clitorises are documented in medical literature, but they are not common. As with any anatomical variation, it's important to approach the topic with sensitivity and respect for individual experiences.
The set of all real numbers usually represented by a capital R that is double vertical line in the left and bold.
If you have a quadratic function with real coefficients then it can have: two distinct real roots, or a real double root (two coincidental roots), or no real roots. In the last case, it has two complex roots which are conjugates of one another.
If the discriminant > 0 then 2 distinct real solutions.If the discriminant = 0 then 1 double real solution.If the discriminant < 0 then no real solutions (though there are two complex solutions).
double blind
No. They're all privately-made novelty items. In fact, the Mint uses dies that are "keyed" so a tails-side die cannot be put into the heads side of a press, precisely to prevent anyone from creating a real double-sided coin. Please use this site's Search feature to look for the word DOUBLE and you'll find hundreds of similar questions. double-tailed quarter has been certified as a real mint error. See related link to the Coin World article.