Question

little challenge.
You have 8 balls (all look and) weight the same BUT 1 of the balls weights less than the rest.

You have a scale, and you can use the scale twice. How can you determine which ball is the ball that weighs less ?

Answer 1

oh, message. please don't just give it away...

Answer 2

"You have 8 balls (all look and) weight the same BUT 1 of the balls weights less than the rest."

I think it should say...

"You have 8 balls (all look and) weight the same PLUS 1 balls which weighs less than the rest."

:)

Answer 3

but is a corresponding conjunction that fits the purpose that I want to indicate. That is, that although 8 balls weight the same, there is an exception (one of the balls weighs less).

Answer 4

yes but that is 3 weighings

Answer 5

@idku its ur Q so u get to decide how it reads :P
i just thought making 9 the total no. of balls will make the Q easier! lol

Answer 6

if you take 2 pairs of 3 and they weigh the same then the light ball is one of the other 2 You then weigh one against the other to find the light ball.

Answer 7

oh we have nine balls?

Answer 8

oh we decide 8 or 9 right?

Answer 9

@welshfella Nope - I thought it was with 9 balls but OP said its 8. either way u got it :)

Answer 10

\(\color{blue}{\text{Originally Posted by}}\) @sdfgsdfgs
"You have 8 balls (all look and) weight the same BUT 1 of the balls weights less than the rest."

I think it should say...

"You have 8 balls (all look and) weight the same PLUS 1 balls which weighs less than the rest."

:)
\(\color{blue}{\text{End of Quote}}\)

I'm sure OP is intended to say first one...

Answer 11

the question is what is the final question??

Answer 12

now if one set of 3 balls weigh differently you take the lightest and pick 2 out and weigh them again If 0ne wieghs light its that one If they weigh the same its the other ball.

Answer 13

correct @welshfella n thats why I thought making a total 9 would be easier. But same method will work for 8.

Answer 14

good question