This time around, I gave you six numbers and asked you to discover which was the odd one out:

904 751 625 807 283 427

You can see the answer after the break!

This time around, I gave you six numbers and asked you to discover which was the odd one out:

904 751 625 807 283 427

You can see the answer after the break!

So tell me then, which number is the odd one out?

904 751 625 807 283 427

Vel.

You may remember that for one of my recent puzzles, “Damn right it’s MS Paint”, I posted this solution. One obvious issue with this solution is that it required guesswork to work out the numbers on the bottom row – until now, that is!

In his comment to the post, Xbalanque laid out a much better method of finding the bottom row numbers using some surprisingly simple algebra. I’ve quoted his method after the break along with a diagram to clarify matters (more MS Paint, appropriately enough), so please do check it out! I’ve also edited the original solution with a link to this post.

On Monday, I posed this question:

A hiker walks from one town to another. On the first day she covers one fifth of the total distance. The next day she covers a quarter of what is left. The following day she covers two fifths of the remainder and on the fourth day half of the remaining distance. She now has 25 miles left. How many miles has she travelled?

And now all shall be revealed! Well, after the break.

I felt this was appropriate. A very nice production from Sharm, Cryssy and Quix0tica!

A hiker walks from one town to another. On the first day she covers one fifth of the total distance. The next day she covers a quarter of what is left. The following day she covers two fifths of the remainder and on the fourth day half of the remaining distance. She now has 25 miles left. How many miles has she travelled?

Good luck! You might want your calculator for this one…

Vel.

This week I showed you this grid and asked you to calculate the value of the top row of the grid:

Find the solution after the break!