Two ways only. 4 rows with 25 stamps each or 5 rows with 20 stamps each.
you can arrange three beads 9 different ways.
8
24 ways
362,880 ways
you can arrange 8 pictures 28 different ways
Two ways only. 4 rows with 25 stamps each or 5 rows with 20 stamps each.
you can arrange three beads 9 different ways.
120 ways
8
8! = 40320 ways.
There are 30 ways.
24 ways
24 ways
362,880 ways
19 ways
10!