### Gridlock

I am sorry to be so boring, really, but when I find something new and interesting I throw myself into it

Find four numbers in a straight line which multiply together to form the largest total. That's all. You proofreading types out there can knock it off in about three minutes, if that. I wrote down five combinations of numbers that looked promising and checked two of them, both of which were wrong, so I pored over the table until I found a set that, without even checking, I knew was the right answer, and it was.

Okay, one more. This one seems insanely complicated but with a flash of insight, you can solve it in a few seconds. The problem:

Tomorrow: something more interesting. Really!

*very hard*, and I'm still banging my way through those Project Euler problems (I've solved 17), and here's another one you might like to have a look at. Or not. Like the previous one, it requires no math or programming skills except the ability to use a calculator, and that only at the very end.Find four numbers in a straight line which multiply together to form the largest total. That's all. You proofreading types out there can knock it off in about three minutes, if that. I wrote down five combinations of numbers that looked promising and checked two of them, both of which were wrong, so I pored over the table until I found a set that, without even checking, I knew was the right answer, and it was.

Okay, one more. This one seems insanely complicated but with a flash of insight, you can solve it in a few seconds. The problem:

*How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?*You don't need all kinds of extraneous information such as how many leap years there are in a century or how many days are in any given month: you just, as it turns out, need to know two things, and once you've identified them, you can figure this out with pencil and paper. Go ahead; give it a try.Tomorrow: something more interesting. Really!

## 4 Comments:

This comment has been removed by the author.

Sorry about that, I deleted the offending post!

The total for my 4 numbers is:

70,600,674 and was found in about a minute.

Yup.

just simple logic and proofreading skills, no real mathematical skills at all, required. Yes indeed :)

Post a Comment

<< Home