Choose two different types of copies from five regular script, three official script and two cursive calligraphy works. There are several different ways to choose them.

If you ask, "How many different ways are there to choose a writing style?" ：

There should be three options.

If you ask, "How many different ways are there to choose calligraphy works?" ：

If you choose two pictures, then:

a*b+a*c+b*c

5*3+5*2+3*2=3 1

There should be 3 1 options.

If you select two pictures and then distinguish between consecutive copies, then:

a*b+a*c+b*a+b*c+c*a+c*b

5*3+5*2+3*5+3*2+2*5+2*3=62

There should be 62 kinds.

If you choose three:

a*b*c

5*3*2=30

There should be 30 options.

If you select three pictures and then distinguish between consecutive copies, then:

There should be 180 kinds.

There should be a formula for this kind of problem, but I forgot that the above formula is easier to understand. I learned it in primary school.