MAths problem... can u answer it?

[Sufian]

Find the smallest number which can be
multiplied by 112 to give a square number.

talking trash lah... if u can, good. Sec 1 question. haha

[Bryan]

iya so easy

[Twxian]

no answer no talk....

[Twxian]

0 7 28 63 .....

[galapogos]

Find the smallest number which can be
multiplied by 112 to give a square number.

talking trash lah... if u can, good. Sec 1 question. haha

Code: Select all

#include <stdio.h>
#include <math.h>
void main()
{
  const int num = 112;
  int i;
  double result;
  for (i=1;i<112;i++)
  {
    result = sqrt(i*num);
    if (result == floor(result))
      break;
  }
  printf("The smallest number which can be multiplied by %d to give a square number is %d\n", num, i);
}

[Sufian]

haha....

ok lah.. i show u how to derive the answer...

112
= 2 X 2 X 2 X 2 X 7
= (2 X 2 X 7) X (2 X 2)

so... from the above.... answer is?

[nakorius]

MKLGHLG!

[Sufian]

huh??

[manyu882]

haha....

ok lah.. i show u how to derive the answer...

112
= 2 X 2 X 2 X 2 X 7
= (2 X 2 X 7) X (2 X 2)

so... from the above.... answer is?

112
= 2 X 2 X 2 X 2 X 7
= (2 X 2 X 7) X (2 X 2) (7)


ans 7

got prize?

[nakorius]

Find the smallest number which can be
multiplied by 112 to give a square number.

talking trash lah... if u can, good. Sec 1 question. haha

Code: Select all

#include <stdio.h>
#include <math.h>
void main()
{
  const int num = 112;
  int i;
  double result;
  for (i=1;i<112;i++)
  {
    result = sqrt(i*num);
    if (result == floor(result))
      break;
  }
  printf("The smallest number which can be multiplied by %d to give a square number is %d\n", num, i);
}

Basket... use C programming to solve it ah?

[manyu882]

eh post somemore math qn

[galapogos]

My program already calculates and prints out the answer lor. Don't believe save it as main.c, boot up in Linux and run "gcc main.c -o main -lm" and then run "./main" and see what it prints out. Don't need to be 112 or square root or multiplication also. Can solve for every number and every operation. Power right?

[manyu882]

My program already calculates and prints out the answer lor. Don't believe save it as main.c, boot up in Linux and run "gcc main.c -o main -lm" and then run "./main" and see what it prints out. Don't need to be 112 or square root or multiplication also. Can solve for every number and every operation. Power right?

chim. i learn c prog before but i throw back everything to lecturer liao. tt one u post out suddenly i remember what i learn.

[Derek]

Interestingly a study was done which showed that the reason why Asians are better at Math than Westerners is because we don't give up as quickly. The correlation was too strong to ignore.

From the book Outliers by Malcom Gladwell.

[lips]

sec 1 qn? maybe i should retake my psle

[Steph_Parker]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

[Weib]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

you forgot to add that you're fat too =)

[Steph_Parker]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

you forgot to add that you're fat too =)

eh
THANKS FOR REMINDING ME THAT AH.
TRYING TO BE FUNNY ISSIT.
ok la ok la, am fat lah =(

[Derek]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

That is actually a misnomer. The people who are good at math are good because they try harder and more often than those who are supposingly sucky at math.

[Weib]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

you forgot to add that you're fat too =)

eh
THANKS FOR REMINDING ME THAT AH.
TRYING TO BE FUNNY ISSIT.
ok la ok la, am fat lah =(

You like to call yourself fat then i acknowledge lo..
besides take a bigger one to call out smaller one right

[Steph_Parker]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

you forgot to add that you're fat too =)

eh
THANKS FOR REMINDING ME THAT AH.
TRYING TO BE FUNNY ISSIT.
ok la ok la, am fat lah =(

You like to call yourself fat then i acknowledge lo..
besides take a bigger one to call out smaller one right

xiao pang =(

[Twxian]

Find the smallest number which can be
multiplied by 112 to give a square number.

talking trash lah... if u can, good. Sec 1 question. haha

Code: Select all

#include <stdio.h>
#include <math.h>
void main()
{
  const int num = 112;
  int i;
  double result;
  for (i=1;i<112;i++)
  {
    result = sqrt(i*num);
    if (result == floor(result))
      break;
  }
  printf("The smallest number which can be multiplied by %d to give a square number is %d\n", num, i);
}

wah chius use C... i ish use php....

[manyu882]

never like math cuz i suck at it.
they say...
people who are good at math are intelligent.
guess im not

That is actually a misnomer. The people who are good at math are good because they try harder and more often than those who are supposingly sucky at math.

eh the book got say something along this line or not.

if never solve the question will never feel the satisfaction. then solve already want to solve somemore question. until the brain is tired.

[galapogos]

Find the smallest number which can be
multiplied by 112 to give a square number.

talking trash lah... if u can, good. Sec 1 question. haha

Code: Select all

#include <stdio.h>
#include <math.h>
void main()
{
  const int num = 112;
  int i;
  double result;
  for (i=1;i<112;i++)
  {
    result = sqrt(i*num);
    if (result == floor(result))
      break;
  }
  printf("The smallest number which can be multiplied by %d to give a square number is %d\n", num, i);
}

wah chius use C... i ish use php....

i ish old school, dunno php wan.

[Sufian]

I posted this question because I realise that when posting this to the sec 3, almost half of them asked for more clue. Thus, being stuck because cannot figure out the 1st step.

During our time in school (Goi, Xian, me, Ben,etc), I believe these questions are the norm.

[galapogos]

No leh, mine usually all just a lot of brute force calculation.

[Twxian]

yah a lot of things can solve brute force or working backwards one
no need to think so much

[kuro]

what is square number

[galapogos]

i.e. an integer whose square root is also an integer.

[h]

...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.