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What is a positive integer that is equal to the sum of its proper positive divisors (excluding the number itself) called?

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Answer: A perfect number.
You might also think of a perfect number as a number that is half the sum of all of its positive divisors, including itself! This definition is at least 2300 years old as it appears in Euclid's "Elements".


What blood type do you need to be a universal donor?

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Answer: O-
People with O- blood can give blood to anyone. The other blood types can only donate to certain people depending on their blood type. For example, if you are AB+ you can only donate to other AB+ blood types, but you can receive blood from anyone.


Which of the following is another name for Passover?

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Answer: Pesach
The Jewish holiday of Passover can also be referred to as Pesach in the Hebrew language. This is one of the most important holidays in the Jewish calendar.


People believed that if this creature flies 3 times around a person's house, then it signifies that death is approaching that person.

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Answer: Bats
Ghosts are thought to be nearby if a bat flies into a person's house during Halloween.


Red Vines is a popular brand of what type of candy?

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Answer: Red licorice
Red Vines is a licorice company that was founded in 1914 in Chicago, Illinois. The original flavor was raspberry, then in 1952 the recipe was altered to the flavor we know and love today.

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