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Math riddle

How Many Animals Are Going to the River?
Riddle:
1 duck saw 4 elephants as it was going toward the river. Every elephant noticed 2 monkeys going to the river. Every monkey was carrying 1 dove in its paws. How many animals are going to the river?
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Animals on the Bed
Riddle:
You enter a room and notice a bed. There are 3 dogs, 2 cats, 1 goat, 4 crows, and a goose on the bed. In addition, 3 sparrows are flying around the bed. How many LEGS are there on the floor?
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Son of a Chemist
Riddle:
I am the son of a chemist and a mathematician. People call me iron 59. What is my name?
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Head of a Whale
Riddle:
The head of a whale is six feet long; his tail is as long as his head and half his body, and his body is half of his whole length. How long is the whale?
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Next Number
Riddle:
What is the next number in the sequence? 2, 3, 5, 9, 17, _
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Reversed Age
Riddle:
The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be? * There are THREE possible solutions
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The Business of Horses
Riddle:
A businessman buys a horse for $10 and sells it for $20. He then buys the same horse for $30 and sells it for $40. How much has the businessman earned in these 2 deals?
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The Two Kids
Riddle:
Mr. Thompson has 2 children. One of them is a boy. What are the odds the second kid is also a boy?
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A Bunch of Babies
Riddle:
If you have two twins, three triplets and four quadruplets, how many people do you have?
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The Pawn Shop
Riddle:
Jack had only $2, but he needed $3 for his cab fare home. He went to a pawn shop and pawned his $2 for $1.50. Jack then bumped into Don and told him that he would sell him his $2 pawn ticket for $1.50. Dan agreed. Since Jack started out with $2, and he ended up with $3, who is out the extra dollar and why?
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The Handshakers
Riddle:
If seven people meet each other and each shakes hands only once with each of the others, how many handshakes will there have been?
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The Doors of Nine
Riddle:
A new medical building containing 100 offices had just been completed. Mark was hired to paint the numbers 1 to 100 on the doors. How many times will Mark have to paint the number nine?
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A 2 Number Riddle
Riddle:
Take two numbers, such that the square of the first, plus the square of the second, shall equal 8; while the first, plus the product of the first and second, shall equal 6. What are the two numbers?
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The Bubble Boy
Riddle:
If a boy blows 18 bubbles, then pops 6 eats 7 and then he pops 5 and blows 1. How many are left?
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