Puzzles

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10. Today's number is the largest number than can be made from the digits in red boxes.

A book has 386 pages. What do the page numbers on the two middle pages add up to?

In July, I posted the Combining Multiples puzzle.

Today's number is the largest number that cannot be written in the form \(27a+17b\), where \(a\) and \(b\) are positive integers (or 0).

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10. Today's number is the smaller number in a red box to the power of the larger number in a red box.

Here is a list of facts about today's number:

This year, I have spend a lot of time working on the AVE game engine. Today's answer is the code to the safe in this Christmas themed game.

The smallest number that is equal to the sum of its digits multiplied by ten more than the sum of its digits.

You start at A and are allowed to move either to the right or upwards.

How many different routes are there to get from A to B?