Is Elijah part of a Jewish holiday?
The Jewish holiday Passover involves a traditional ceremonial dinner. During the ceremony, it is customary to fill an extra cup with wine and put it at the center of the table. The door is then opened so the prophet Elijah can visit.
The answer is yes.

Are all twins the same gender?
Identical twins are always the same gender. However, identical twins are very rare. Most twin cases are formed from two different fertilizations during the same conception event. Non-identical twins can be opposite gender or same gender.
The answer is no.

Do the Egyptian pyramids look the same from outside as they did when new?
When originally built, the Great Pyramids had a thin surface of limestone covering the bricks, making them shine in the sun. Over the centuries, the limestone layer has been removed by thieves and erosion, exposing the more common stone bricks underneath.
The answer is no.

Does a person need a college degree to become a bartender?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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College degrees require at least 2 years of study to obtain. Bartender training generally takes 40 hours.
The answer is no.