Qcommands

PMT(10%,12,10000,100,0)

PMT(10%,12..24,10000,100,0)

((1..100)<>n)!

1..100@[SIN,COS,"x^((2..24)<>n)"]

Enigma https://www.youtube.com/watch?v=G2_Q9FoD-oQ&t=5s

units.on; ((26n)!)/((6n!)*(10n!)*((2n)^10))*26*26*26*60 158962555217826360000

length of factorials

(((1..10000..100)<>n)!).$(x=>x.toString().length)

1..(1..100)..3

5..(1..10)

1..(3..100)