3,628,800
1) Note that in these arrangements, according to the text the order of the blocks does not matter.
2) When this kind of thing happens we call this is a Permutation, in which the blocks may present in any order, that is not relevant
3) We can calculate it like this:
[tex]P_{10}=10!=10\times9\times8\times7\times6\times5\times4\times3\times2\times1=3,628,800[/tex]Thus, there are 3,628,800 different ways to arrange those 10 blocks