()
()()
()()()
()()()()

place number from 1-10 in the pyramid
bottom number have to subtract to get the top number like
but they cant repeat if it repeats it fails

()
(2)()
(9)(7)(4)
(10)(1)(8)(4)

10-1 = 9! 8-4 = 4
4 then again 4 it repeats it fails
soo all you doing it getting the bottom numbers mainly
i tried this got 2 solutions!
there might be more
see if you can find it em!

i will give you some hints you need em =/

IDK.. i was bored