Goi's Fitness Forum

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

lol...

manyu882 wrote:one more qn:

not so related to math:

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

science ah, dont know trick qn or not

can heat get transmit from the bush to the metal?

if cannot, then no change. lol

if can, by right metal get bigger, but outer go out, inner go in, so hole get smaller?

shit, i am darn bad in maths and science now.

got econs qn?

lips wrote:

manyu882 wrote:one more qn:

not so related to math:

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

science ah, dont know trick qn or not

can heat get transmit from the bush to the metal?

if cannot, then no change. lol

if can, by right metal get bigger, but outer go out, inner go in, so hole get smaller?

shit, i am darn bad in maths and science now.

got econs qn?

lol econs ah.. let me think
this one also popular qn.

jordan you and aaron went to eat some 煮炒, the total bill is $$30 cos jordan and aaron eat too much.

so each person pay $10 la. the the cashier realised that you all should pay five dollars lesser. the he pass 5 dollars to the one of his worker to give you all

since you all dont know the actual price, he give a dollar to each of you all and keep two for himself

that means that each of you has paid $9, total, $27 and the waiter kept $2 =27+2=29.

where the other dollar go


what the is going on here??!??!

manyu882 wrote: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

you gave away the answer... but
x ≈ 7.62

h wrote:

manyu882 wrote: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

you gave away the answer... but
x ≈ 7.62

eh post working.. as well for the earth thingy

I've returned all my calculus to my freshman/sophomore professors...

manyu882 wrote:one more qn:

not so related to math:

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

i think everyone has seen the answer somewhere...

place a ball (with diameter slightly greater than the hole of the ring) on top of the ring. what happens when you heat the ring?

manyu882 wrote:

h wrote:

manyu882 wrote: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

you gave away the answer... but
x ≈ 7.62

eh post working.. as well for the earth thingy

do i win anything?

lips wrote:got econs qn?

derive b-s model?
-2nd part removed, bad question-
explain the failure of ltcm

h wrote:

manyu882 wrote:one more qn:

not so related to math:

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

i think everyone has seen the answer somewhere...

place a ball (with diameter slightly greater than the hole of the ring) on top of the ring. what happens when you heat the ring?

lol....nice thinking concept. there are people who dont look at this view

h wrote:

manyu882 wrote:

h wrote:

manyu882 wrote: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

you gave away the answer... but
x ≈ 7.62

eh post working.. as well for the earth thingy

do i win anything?

lol.. u win free air..

thank you for the free air.

please send $12288891, as that was my "air bill"

h wrote:thank you for the free air.

please send $12288891, as that was my "air bill"

tts too much free air

jia lat, can we try psle qn?

lips wrote:jia lat, can we try psle qn?

simplify AB + CD + Kiam Cai + Loti

this one:
primary 6 ba. still remember this qn i got it right. everyone in the class cannot get it.

there is a liquid multiply itself by 2 times every 1 min.
1ml of this liquid is put in a jar
it takes an hour to fill the jar to the brim
by when will the jar be a quater filled?

57min

Canuck eh wrote:57min

very close but wrong

Then it's 58 if you mean it's filled to the brim at the end of 60 instead of at the start of the 60th min

I want my air too

45 mins.... 3/4 x 60mins(full) = 45mins

Canuck eh wrote:Then it's 58 if you mean it's filled to the brim at the end of 60 instead of at the start of the 60th min

I want my air too

my german gas u want?

Bryan wrote:45 mins.... 3/4 x 60mins(full) = 45mins

-_-

manyu882 wrote:

Bryan wrote:45 mins.... 3/4 x 60mins(full) = 45mins

-_-

wrong meh??? Keep it Simple..KISS.... i feel so clever...

ok la this one primary 1 no need calculator:

1x8x2x3x9x7x1x2x6x7x5x2x6x8x5x1x2x3x6x8x4x7x4x1x2x3x6x5x4x89x8x5x8x8x8x8x8x8x8x8x8x9x9xx8x9x2x1x3x0x5x7x4x1x2x32x8x7x4x12x1+88=?

Canuck eh wrote:Then it's 58 if you mean it's filled to the brim at the end of 60 instead of at the start of the 60th min

I want my air too

it is 60:00:00, not 60:59:99, and the answer is still 58 min...

h wrote:

Canuck eh wrote:Then it's 58 if you mean it's filled to the brim at the end of 60 instead of at the start of the 60th min

I want my air too

it is 60:00:00, not 60:59:99, and the answer is still 58 min...

60:59:99 is the end of the 61st min... just as 0:01 is the first second of the first minute

Canuck eh wrote:

h wrote:

Canuck eh wrote:Then it's 58 if you mean it's filled to the brim at the end of 60 instead of at the start of the 60th min

I want my air too

it is 60:00:00, not 60:59:99, and the answer is still 58 min...

60:59:99 is the end of the 61st min... just as 0:01 is the first second of the first minute

uh, yea, my mistake...

but... just to get the last word in:

if it takes an hour to fill an object, then it should be done at 60:00:00, not 59:00:01 (beginning of the 60th) right?

i'm a last min man, I need that last min to get it done.

eh.. i have no idea what u all debating about

but just work backwards la

it takes an hour to fill the jar to the brim

an hour=60min(3600 sec)

so 60 min(3600 sec) is needed for it to filled to the brim
59min(3540 sec) for it to be half filled
58 min(3480 sec) is needed to fill it to quater of it.

yea, we both know the answer.

many of you have probably done this one:

a) we are given 80 coins of the same denomination; we know that one of them i counterfeit and that it is lighter than the others. locate the counterfeit coin by using four weighings on a pan balance.

b) it is known that there is one counterfeit coin in a collection of n similar coins. what is the least number of weight trials necessary to identify the counterfeit? (assume the counterfeit is lighter)