Sat 18 Jun, 2005 03:46 am - solution to chinese problem
ok... a simple solution to this problem is....
:arrow: [/B]number the balls 1,2,3....12
now weigh 1,2,3,4 against 5,6,7,8
then weigh 1,5,9,4 against 2,6,11,12... (view)
Mon 6 Jun, 2005 10:35 am - [b]using 6,4,3,1 produce 24.
conditions:
1)use all the digits(6,4,3,1)only once.
2)use only +,-,/,* without repetition(may not use all).
3)you cannot combine digits( e.g. 6 & 4... (view)
Sat 2 Apr, 2005 11:58 pm - [quote="boomerang"]Put four balls on one side and four balls on the other.
You will discover one pile is heavier or, if they are equal, the other unweighed pile has the heavier ball.... (view)
Fri 1 Apr, 2005 02:03 pm - u r given 12 identical balls,one of which is slightly heavier or lighter.u hav a weighing balance.using weighing balance thrice(i.e. weighing three times)find out the odd ball :?: (view)
Fri 1 Apr, 2005 01:08 pm - [b]Are there any odd perfect numbers?
A perfect number is a positive integer that is equal to the sum of all
its positive divisors, other than itself.
For example, 28 is perfect because... (view)
Wed 12 Jan, 2005 05:10 am - what is the relation between particle velocity n wave velocity?
what is the relation between particle frequency n wave frequency? (view)
