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Riddle #1:
The local recycling plant had a contract requiring anyone who obtained recycled bottles for storage from them to bring them back to be recycled again. The plant could make one new bottle from every seven bottles returned. One week, on Monday, they got back 343 bottles to recycle. Assuming that everybody brought back all the empties, how many could they eventually remake from the 343?
Riddles #2:
It’s not easy having a mathematics professor as a new friend. When she invites you to her house, she says, “All the houses on my side of the street are numbered consecutively in even numbers. There are six houses on my side of my block and the sum of their numbers is 9870. You don’t know which block I live on, and it’s a long, long street, but I will tell you that I live in the lowest number on my side of the block. What’s the number? Or are you just going to ring the first even-numbered doorbell for twenty blocks?
Riddle #3:
This paragraph is most unusual. What is so unusual about it? If you look hard, you should find what it is without too much difficulty. Try hard to spot it. How long did you think about it?
The local recycling plant had a contract requiring anyone who obtained recycled bottles for storage from them to bring them back to be recycled again. The plant could make one new bottle from every seven bottles returned. One week, on Monday, they got back 343 bottles to recycle. Assuming that everybody brought back all the empties, how many could they eventually remake from the 343?
Riddles #2:
It’s not easy having a mathematics professor as a new friend. When she invites you to her house, she says, “All the houses on my side of the street are numbered consecutively in even numbers. There are six houses on my side of my block and the sum of their numbers is 9870. You don’t know which block I live on, and it’s a long, long street, but I will tell you that I live in the lowest number on my side of the block. What’s the number? Or are you just going to ring the first even-numbered doorbell for twenty blocks?
Riddle #3:
This paragraph is most unusual. What is so unusual about it? If you look hard, you should find what it is without too much difficulty. Try hard to spot it. How long did you think about it?