Author Topic: Math Challenge (Read 385 times)

Dominæter · « **on:** November 30, 2005, 06:49:00 pm »

Lets see how intelligent the people who play on Layo are (no offense intended, just a joke!)
Heres some good math.

This is kind of a test im putting on, post the number and the answer next to it. PM me if you want to know your score. I will then PM you the number of questions correct. (if it really bugs you i will tell you which ones you got wrong, but would prefer not to so everyone has the same chance)

It starts easy and gets more difficult as questions increase

Oh and please dont use a calculator, this is a paper and mind test.

1) Evaluate
43921
- 8754
------

2) What is two-thirds of sixty percent of half of seventy-five?

3) What values of z satisfy 2(3-4z)-3(3z-2) = 80?

4) When the digits of a two digit positive number are reversed, the resulting positive two digit number is 72 less than the origional number? What is the number?

5) What is the name foir a line segment in a triangle with endpoints on a vertex and the side opposite the vertex?

6) A well is dug in the shape of a right circular cylinder with radius of one meter and depth of fifty meters. What is the volume of cubic meters, of dirt in the well?

7) What is the sum of the squares of the roots of the equation p^3+2p^2+3p+4=0?
("^" means "to the power of")

8)Express the product of 345 base 8 and 67 base 8 in as a base 8 numeral.

9) What is the sum of the elements of

[-2 5]^-1
[ 3 -7]
(with "^-1" i mean the inverse of the matrix. hint, hint)

10) A class of 13 students orders ice cream. The oprder is read over the phone to the ice cream store and clerk fills the order and delivers the ice cream to the class. The names of the studetns are not included in the order, just the number of cones of different flavors. There is only one flavor per cone for each student. The possible flavors are vanilla, chocolate, walnut, strawberry, and peach. How many different ice cream orders would be possible for this class?

That's it hope you enjoy it. Ill post a more challenging one if people actually participate in this one.
Hope you have fun, happy thinking!

Varnart · « **Reply #1 on:** December 01, 2005, 01:52:00 am »

bah... I can't do this in english... too many things with different names from portuguese.

aragwen · « **Reply #2 on:** December 01, 2005, 02:02:00 am »

I hope this is not someone's assignment which they need answers for. But here is the first four answers....all if have time for now.
1. 35167 2. 15 3. -4 4. 91

Doc-Holiday · « **Reply #3 on:** December 01, 2005, 08:40:00 am »

*twitches*

THE PAPER IS ANGRY AT ME.....

miltonyorkcastle · « **Reply #4 on:** December 01, 2005, 09:53:00 am »

As a Math teacher and UIL (UIL -> ruler of all competitive things in Texas schools) Mathematics/Number Sense/Calculater sponsor, I refuse to answer anyone of those questions, lest I reduce myself to spending my freetime on my vocation.

Dominæter · « **Reply #5 on:** December 01, 2005, 05:01:00 pm »

im sory you feel that way but i would really appreciate your answers. you dont need to devote all your free time to math. I would like to see how much the people who do math competitions really know

As of now aragwen has the highscore
oh and its not for anyones homework its fust for fun.
Dom

Candyman111 · « **Reply #6 on:** December 01, 2005, 05:04:00 pm »

ahhhh........syntax error...stupidity=very yes

ShrubberyJSC · « **Reply #7 on:** December 02, 2005, 12:25:00 pm »

Quote

Candyman111 - 12/1/2005 5:04 PM

ahhhh........syntax error...stupidity=very yes

You know, you can't just qoute that for everything.....

ShrubberyJSC · « **Reply #8 on:** December 02, 2005, 12:26:00 pm »

And how come you're still make-up?

Just change your prefs. already....

unless you've grown fond of your Rouge..........

Marswipp · « **Reply #9 on:** December 02, 2005, 01:36:00 pm »

My try:
1) 35,167
2) 15
3) negative 4
4) 80
5) hypotenuse
6) about 39.25 cubic meters
7) (answer may have roots)

('s logorithmic)
9) negative 14
10) 1030
How'd I do?

Candyman111 · « **Reply #10 on:** December 02, 2005, 03:05:00 pm »

well...I actually was trying to RP a rouge, not a rogue but if people are just going to ridicule me.... lol, i just fixed it, thanks shrub

Rayenoir · « **Reply #11 on:** December 02, 2005, 03:15:00 pm »

Math is chaotic evil and thus restricted on Layo.

Dominæter · « **Reply #12 on:** December 02, 2005, 04:22:00 pm »

Alrighty you got a 40%, their tough look back at your work you got some wrong answers, and the only one with a word answer is question 5.

Marswipp · « **Reply #13 on:** December 03, 2005, 02:38:00 pm »

Four out of ten on something that is done for fun is half-decent. Although, I did notice that it is mostly algebra. One of the questions is geometric, another is a proportion.

Ne'er · « **Reply #14 on:** December 04, 2005, 06:08:00 am »

I would do these problems,but I don't think I would at all. I have math class at school... and then for some reason I agreed to do Math League. So.... sorry, but I do enough math as it is.

Marswipp · « **Reply #15 on:** December 04, 2005, 08:41:00 am »

Math can be entertaining as long as it is not found to be too easy, too hard, or presented dully. (for me anyway.)

Eloyn · « **Reply #16 on:** December 04, 2005, 09:26:00 am »

I got this, but I'm only 16 so I don't know much yet ^_^

1) 35,167
2)14.985
3)-4
4)91
5) Not sure
6)493.48

Candyman111 · « **Reply #17 on:** December 04, 2005, 08:57:00 pm »

Dom, what math class are you in. I knew Jeff was pretty darn good at math, are you in his class?

darkstorme · « **Reply #18 on:** July 14, 2006, 02:04:26 pm »

My attempt (done on paper, without looking at the other solutions:

1) 35167
2) 15
3) -4
4) 91
5) a bisector
6) 157.075 (approximately)
7) (Not doing cube roots. Nope. Nuh-uh)

30763
9) 17
10) 2380

I have all my work available to scan in if I am disbelieved. *grins*

lunchboxkilla · « **Reply #19 on:** July 15, 2006, 01:49:45 am »

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My anwsers