ELI5: Explain Like I'm 5

Numerical 3-dimensional matching

Okay kiddo, you know how sometimes when we play with blocks we try to match them up so that they fit perfectly together, like a puzzle? Well, imagine we have a bunch of triplets of blocks and we want to match them up in groups of three so that each block in every triplet fits in with the other two blocks.

Now, to make it a little harder, let's pretend each block is a number and we can only match up triplets where the sum of all three numbers equals a certain target number. We call this "numerical 3-dimensional matching." It's like a really cool math puzzle!

So, imagine we have nine blocks with different numbers on them and we want to match them up in triplets so that the sum of each triplet equals 15. We have to look at all the possible combinations of triplets and see if any of them add up to 15. This can get pretty tricky, especially when we have a lot of blocks!

But don't worry, there are special computer programs that can help us figure out which triplets match up perfectly. It's like having a super smart friend who can do all the hard math for us.

And that's basically what numerical 3-dimensional matching is: matching up blocks (or numbers) in groups of three so that they fit perfectly together and add up to a certain target number. It's all about using your brain and problem-solving skills to solve the puzzle!