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.

Well, I just googled why manholes covers are round. The penny thing is completely beyond me.

Hey guess what?

It's National Sandwich Day! Woo hoo!

Off to celebrate: [link]

Thanks for nothing, man -- I already didn't have a sandwich for lunch and probably won't have a sandwich for dinner!

I had sushi for lunch, and I'm having stew for dinner. I have failed at National Sandwich Day.

I think it would work the same with 8. You make two piles of three and one of two, weigh the two piles of three against each other and the coin is either in one of those piles or it is in the pile of two.

Thanks for nothing, man -- I already didn't have a sandwich for lunch and probably won't have a sandwich for dinner!

Same here. I am overwhelmed with my sandwichlessness.

I had salad for lunch. That's like the OPPOSITE of a sandwich. Tonight we're going to a benefit for the neighborhood family center where a bunch of restaurants in the 'hood are providing samples of their fare. There's a good possibility there'll be sandwiches there!

Oops. I missed Jessica's post saying the same thing. That's what I get for posting while distracted by a toddler.

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...?????

That's wonderful. I would take "I'd just look at them and see which is not as dark as the others" as a correct answer. With bonus points.

Ooh, I haven't had lunch yet! I do not have the capability of having a sandwich, though. But maybe for dinner! I'd better make that happen.