The question will be changed every month, or after I receive a right answer of the previous one.

Each time I will announce a new question related to math (but it can be anything). If you think you get the answer, then please send it to HERE.

(I will not accept the answer in any other way!!)

If you are the first person who get the right answer and send it first to me by e-mail, then you will get the prize of the month which will be anounced with the monthly quiz.

One can receive up to 10% extra points of one mid-test points within one semester. S/he could claim other prize announced for each quiz.

Note: You have to explain how you get the answer or why the answer is true, etc. I will not think the anwer-only response as the right answer, even it is right!!

2005 Quiz 4 (5/2)  Magic "Squares"

 

Perhaps you've seen the magic square

8 1 6
3 5 7
4 9 2
which has the property that all rows, columns and diagonals sum to 15. Well, it has another "magic" and "square" property! If you read the rows as NUMBERS, forwards and backwards, and square them, then

8162 + 3572 + 4922 = 6182 + 7532 + 2942.

How about columns? digonals?

Explain why!!

 

(5% of one inclass test points or a fancy pan)

2005 Quiz 3 (3/29)  In Desert

 

 On a long horseback trip through the Arizona desert, three horsemen start out with 7 one gallon canteens of water each. Half way through the trip they inventory their supply. They find seven full canteens, seven empty canteens, and seven half full. How do you divide the canteens so that each rider has the same amount of canteens and water for each? (You cannot transfer water for fear of spilling).

 

Winner & Answer: Maria Ofelia Salcedo

2005 Quiz 2 (2/8)   How Much Chocolate?

 

A round cookie of radius 1 inch is rolled 30 degrees in each direction in a pan containing chocolate to a depth of 1/2 inch. What is the area of the disk that is covered in chocolate?

 

Winner & Answer: Omar Oropeza

2005 Quiz 1 (2/1)   Decimal

 

Find the digit of the n-th position after the decimal of 10/81.

 

Winner & Answer: Omar Oropeza