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# Puzzle Archives :: Maths Puzzle

Home > Puzzle Archives > Maths Puzzle > Puzzle List

#### Co. Cloud

Maths Puzzle Practice Set 5

• Question :: 1

# A Farmer Challenges an Engineer a Physicist and a Mathematician.

A farmer challenges an engineer, a physicist, and a mathematician to fence off the largest amount of area on earth using the least amount of fence.

The engineer made his fence in a large circle and said it was the most efficient.

The physicist made a long line and said that the length was infinite. Then he said that fencing half of the Earth was the best.

The mathematician laughed at the others and with his design, beat the others. What did he do?

No Best Answer on this question yet!

• Question :: 2

# Parrots and Cages

Tina has some parrots and some cages for the parrots. If she put 4 parrots into each cage then she will have 1 cage left. If she put 3 parrots into each cage then she will have 1 parrot left over. How many parrots and cages does she have?

No Best Answer on this question yet!

• Question :: 3

# Chain Nail

There is a chain nailed to the wall. The chain is 10 feet long and the center of the chain dips down 5 feet from where each side of the chain is nailed to the wall. How far are the 2 ends of chain from each other?

No Best Answer on this question yet!

• Question :: 4

# Grandpa's Age

Two boys don't know the age of each other, one day they met grandpa and asked him about his age. Grandpa said:"The addition of digit in the tens place and the digit in one's place of my age is equal to the subtraction of digit in the tens place and the digit in ones place of the age of one of you." The two guys thought hard but didn't figure it out. The second day, they came to ask grandpa again, grandpa said:"My age is equal to the multiplication of the addition and subtraction of your ages." The two guys could not figure it out. The third day, they came to grandpa,  grandpa said:"My age = (age of one of you)*7 - (age of the other)*4" The two poor boys still could not figure it out, the forth day, grandpa said:"One of you, whose age I didn't refer to in the first day, exchange his age's digit in tens place with digit in ones place, then minus the addition of the digit in tens place and the digit in ones place, the result is equal to my age." Can you figure out grandpa's age?

No Best Answer on this question yet!

• Question :: 5

# Spiderman's Girlfriends

Spiderman has two girlfriends, Mary Jane & Gwen Stacy.
After completing every mission, he rushes to the central subway. Since spidey is a nice man, much impartial, he takes which-ever train arrives first. From the subway, one series go towards Mary's place, and another series move towards Stacy. Trains from either series appear every 10 minutes. Also, Peter Parker sticks with the train which arrives first.
But somehow, he notices that he is spending 9 times more dates with Mary Jane than Stacy. Can you explain why?

No Best Answer on this question yet!

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