SERIOUS QUESTIONS (SET - 4)

Below are some mind boggling questions that can be fun to answer. These are serious questions and have serious answers unlike my other "Riddles" where you may have to think of a non-serious answer. Some of these are very easy while some of them are really tough but once you know the answer everything is easy. Remember these questions to impress someone or may be to win yourself in a gathering. please me the questions and I would include it here with your (the author's) name and contact address. Now enjoy, test your brain and have fun. Don't feel bad if you cannot answer any question as no one can the first time.

What is often returned but never borrowed?
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Thanks.
End

What is bought by the yard and worn by the foot?
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Carpet.
End

A man told his son that he would give him $1000 if he could accomplish the following task. The father gave his son ten envelopes and a thousand dollars, all in one dollar bills. He told his son, "Place the money in the envelopes in such a manner that no matter what number of dollars I ask for, you can give me one or more of the envelopes, containing the exact amount I asked for without having to open any of the envelopes. If you can do this, you will keep the $1000." How is the son going to accomplish that?
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The contents or the ten envelopes (in dollar bills) should be as follows: $1, 2,4, 8, 16, 32,64, 128,256, 489. The first nine numbers are in geometrical progression, and their sum, deducted from 1,000, gives the contents of the tenth envelope.
End

A church safe was broken into and the Sunday offering was stolen. Four suspects were identified. Each suspect made one statement. Three of the suspects told the truth and the guilty suspect lied. Who stole the church's money?
Sonny: Beatrice is lying.
Andy: I was not in town at the time of the theft.
Zoli: Sonny's telling the truth.
Beatrice: Sonny is the guilty one?
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Begin
Beatrice is the guilty one. If three people are telling the truth, then since Sonny says Zoli is telling the truth and Beatrice says that Sonny did it, Beatrice is the one telling the lie. Since the one lying was the thief, Beatrice must be the thief
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What is a four-digit number in which the first digit is one-third the second digit, the third is the sum of the first and second, and the last is three times the second?
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1349.
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There are 100 switches numbered 1 to 100. There are 100 people numbered 1 to 100 Person x comes and toggles all switches that are multiples of x i.e., person 1 toggles 1,2,3,..., then 2 toggles 2,4,6,..., then 3 toggles 3, 6,9,..., etc. and at the end, person 100 toggles the 100th switch All switches are initially off. How many switches are ON at the end?
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There would be 10 switches on at the end- the number of perfect squares found between 1 and 100. In order for the switch to be on at the end, it would have to be toggled an odd number of times. The only way for that to happen is if one of the factorizations of that number is repeated (or squared).
End

For the four words below, how many words (in the English language) can you think of that rhyme with each word. Month, Orange, Silver, Purple?
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Nothing in the English language truly rhymes with any of those words.
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What book was once owned by only the wealthy, but now everyone can have it? You can't buy it in a bookstore or take it from a library?
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The telephone book.
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Professor Johnson just returned from a six month vacation in the Middle East. In one of the lectures he gave, he said the highlight of the trip was seeing many of the ancient artifacts first hand. He made mention of having seen several mummies and tapestries dating as far back as 200 B.C. He claimed to have seen coins date 46 B.C., and weapons made of metal from approximately 500 B.C. What is wrong with Professor Johnson's claims?
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Coins were never dated 'B.C.'
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Delete one letter from STENTORIAN and re-arrange the remaining letters to make another word. Now delete from this new word and rearrange the remaining letters to make another new word, and so on until you only have one letter left.
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Begin
STENTORIAN
TRANSIENT
ENTRAINS
NASTIER
ASTERN
TEARS
SATE
TEA
AT
A
End

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