I used unit vectors, but we could scale the terms: A single vector can be decomposed into its 3 orthogonal parts: When the vectors are crossed, each pair of orthogonal components (like ) casts a vote for where the orthogonal vector should point.6 components, 6 votes, and their total is the cross product.That's what's happening with the combination and permutation formula.
We can pick any spot and we have 4 x 8 = 32 options. But suppose we only care about the first 3 decisions -- picking a Gold, Silver and Bronze among 8 contestants. (If multiplication creates dimensions, then division should remove them.) Now, let's say the medals are identical: we're giving a tin can to 3 out of 8 people.
Now, suppose we had 4 shirts and 8 pants and had to pick a single item to sell. In this case, we shrink our solution space by dividing out the 5 dimensions we aren't using (which has 5! We need to further remove dimensions, because we have 3!
Note: This calculator generates IBAN for MBL accounts only.
This tool only converts the entered number into IBAN format.
(Similar to the gradient, where each axis casts a vote for the direction of greatest increase.) Connection with the Determinant You can calculate the cross product using the determinant of this matrix: There’s a neat connection here, as the determinant (“signed area/volume”) tracks the contributions from orthogonal components.