MAths problem... can u answer it?

manyu882 · Post by **manyu882** » Tue Jan 13, 2009 1:07 am

h wrote:...how about this:

In chess, is it possible for the knight to go (by allowable moves) from the lower left-hand corner of the board to the upper right-hand corner and in the process to light exactly once on each square?

note: look at a chessboard, then it's easy.

possible.

manyu882 · Post by **manyu882** » Tue Jan 13, 2009 1:09 am

Try this quest:
what is the 97561651681231681606581321th number of PI

h · Post by h » Tue Jan 13, 2009 1:19 am

manyu882 wrote:
h wrote:...how about this:

In chess, is it possible for the knight to go (by allowable moves) from the lower left-hand corner of the board to the upper right-hand corner and in the process to light exactly once on each square?

note: look at a chessboard, then it's easy.
possible.

unfortunately you're wrong. perhaps you didn't read the in the process to light exactly once on each square part

...and explain your answer please

h · Post by h » Tue Jan 13, 2009 1:39 am

manyu882 wrote:Try this quest:
what is the 97561651681231681606581321th number of PI

i don't really get it. isn't pi an irrational number?
i mean, is there a way to do this other than using a computer?

of course i could just guess 10 times...

manyu882 · Post by **manyu882** » Tue Jan 13, 2009 5:46 pm

h wrote:
manyu882 wrote:Try this quest:
what is the 97561651681231681606581321th number of PI
i don't really get it. isn't pi an irrational number?
i mean, is there a way to do this other than using a computer?

of course i could just guess 10 times...

jk dont need to slove it.
pi is the ratio of the dimeter of a circle to its circumference. so need a super computer to generate that position lol.

the previous qn i just guess only

Post by **galapogos** » Tue Jan 13, 2009 6:06 pm

don't need supercomputer. any computer will do.

manyu882 · Post by **manyu882** » Tue Jan 13, 2009 6:15 pm

galapogos wrote:don't need supercomputer. any computer will do.

sure or not?

Post by **galapogos** » Tue Jan 13, 2009 6:18 pm

manyu882 wrote:
galapogos wrote:don't need supercomputer. any computer will do.
sure or not?

yes. 286 also can one.

nakorius · Post by **nakorius** » Tue Jan 13, 2009 6:25 pm

tsk... PCWs

manyu882 · Post by **manyu882** » Tue Jan 13, 2009 6:31 pm

galapogos wrote:
manyu882 wrote:
galapogos wrote:don't need supercomputer. any computer will do.
sure or not?
yes. 286 also can one.

ok lo. i not pc greek lol. dont know what computers can do these days

h · Post by h » Tue Jan 13, 2009 8:03 pm

you can do it by hand... if you're patient enough.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 7:14 pm

I've a new question. my lecturer told us about this quiz from internet.

imagine there is a very long rope being laid around the earth's equator.

I cut the rope and shift both ends by one meter apart parallel direction to the rope being laid.

and now because of the loose rope, there is some gap between the earth's surface and the rope.

can you tell me which is(are) the object(s) below that can pass through the gap betwwen the earth surface and the rope

*assume that the earth surface is smooth and spheriodical.
*assume that the rope is made up of a special material which energy cannot be absorb. And the tool i use to cut the rope is a kind of special and the only sissor which can cut the rope.

1. bacteria
2. a strend of nano wire
3. a piece of paper
4. a 15cm high wooden stool
5. none of the above
6. all of the above(excluding option 5)

those who knwos this answer can tell us why lol. i know the answer liao so explain to the rest. no googling. i believe that sec 2 kids can do it?

vicvic · Post by **vicvic** » Fri Jan 16, 2009 7:15 pm

5 is the answer.

well too lazy to do the calculation now.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 7:16 pm

vicvic wrote:5 is the answer.

well too lazy to do the calculation now.

lol nice try.

normally people how dont get the ans isnt an engineer

vicvic · Post by **vicvic** » Fri Jan 16, 2009 7:18 pm

i mean, option 5 is the answer - none of the above.

because i'm too lazy to do the exactly working for you now, which includes the use of the PI (the way i do it la)

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 7:21 pm

lol this mcq qn cannot tickam one.

vicvic · Post by **vicvic** » Fri Jan 16, 2009 7:31 pm

er sry nv read properly. everything but no. 4 can pass thru

Post by **galapogos** » Fri Jan 16, 2009 7:48 pm

you can't find a rope made of earthly materials that long that has the elasticity and plasticity to do this experiment, so...none of the above.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 7:51 pm

galapogos wrote:you can't find a rope made of earthly materials that long that has the elasticity and plasticity to do this experiment, so...none of the above.

-___- not lame qn la..

Post by **galapogos** » Fri Jan 16, 2009 8:49 pm

but it's true! technically, it's impossible.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 9:24 pm

lai lai .. all the math pro fall in

h · Post by h » Fri Jan 16, 2009 9:56 pm

15.92....

so all except none.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 10:12 pm

h wrote:15.92....

so all except none.

yeap correct ^^

lips · Post by **lips** » Fri Jan 16, 2009 10:16 pm

I cut the rope and shift both ends by one meter apart parallel direction to the rope being laid.

so wtf, there is 1m gap, all can pass!

simi sec 2 qn, pri 1 also know la.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 10:19 pm

lips wrote:
I cut the rope and shift both ends by one meter apart parallel direction to the rope being laid.
so wtf, there is 1m gap, all can pass!

simi sec 2 qn, pri 1 also know la.

...not talking about that gap

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 10:34 pm

ok one more qn. i'm sure some of you know this:

there is some kind of substance which multiply 4 times by itself every 3 hours and another substance which multyply 3 times of itself every 2 hours

10ml of each substance were put in a 1 litre jar
by when will it be filled with these substance to the brim.

sec 4 qn?

lips · Post by **lips** » Fri Jan 16, 2009 10:53 pm

sec 4 is so tough now?

gosh, no wonder the kids are getting all nerdy.

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 11:00 pm

actually just came out from my mind ba.. this one is sec 4 standard ba?
prelim paper always killer

clue: try to get into this eqn

4^(x/3)+3^(x/2)=10^2

x is the number of hours passed. solve for x

manyu882 · Post by **manyu882** » Fri Jan 16, 2009 11:11 pm

one more qn:

not so related to math:

when this bush undergo heating, will the hole in the centre get small or bigger?

Post by **Twxian** » Fri Jan 16, 2009 11:13 pm

this all small qn mah....100 marks - 5 marks still 95 marks also distinction