Buffy ,'Never Leave Me'
Off-topic discussion. Wanna talk about corsets, duct tape, butt kicking, or physics? This is the place. Detailed discussion of any current-season TV must be whitefonted.
But 3 piles of 3 is nine pennies. The question was about 8 pennies. That technique won't work with 8.
Sure it will - you start out the same, weighing 3 vs 3 (2 left out). If they're the same, weigh the 2 pennies you left out. If they're not, weigh 2 of the pennies from the lighter side.
Dang, I was totally unable to make that leap. Logic is not my strong suit.
Guys, if you want to point and laugh, my first instinct was that one of the pennies was a lighter color and I was all like Picard - How the fuck...?????
You're all on the floor laughing rn, aren't you?
And Jessica's right again! I hate logic problems.
Funny thing is, the two-weighing solution will also work with nine pennies.
The puzzle says eight pennies to trick you into thinking in terms of powers of two.
But 8 still can't be divided equally into 3s. I'm pretty sure. But who knows? It's unknowable!
I'd fail, because I'd think it was a trick question; my answer would be "I'd delegate this question by contacting a person who's more proficient in statistics."
ION, as a good FauxGrandma, I am helping FauxGrandSon with fundraising for the choir tour by buying two pies, one of which can go in the (my!new!big!) freezer so I'm not sitting in front of the tv with a fork in each hand. One Key Lime and one cherry. Nummy nummy.
Annoyingly, a third of my freezer is taken up by the ice maker I don't intend to use.
I'd fail, because I'd think it was a trick question; my answer would be "I'd delegate this question by contacting a person who's more proficient in statistics."
Yep. "Who was doing quality control? Did their test cases cover the possibility of one of the coins being lighter?"
I was so glad that MSFT stopped using those sorts of logic puzzles when I went through interviews with them.