When input equal 3 output equal=12, why???

Question

https://code.sololearn.com/cwbSBcsBAUy1/?ref=app

Answer 1

What happen in this code is:
j=1:
f=1*1 (f=1)

j=2: (at the moment f is 1)
f=1*1 (f=1)
f=1*2 (f=2)

j=3: (at the moment f is 2)
f=2*1 (f=2)
f=2*2 (f=4)
f=4*3 (f=12)

Answer 2

What output do you expect?

Answer 3

~ swim ~ thanks bro

Answer 4

9

Answer 5

I need sum of factorial 3

Answer 6

CarrieForle i need sum of factorial 3. if my input 3, output must be 9, but when i give input 3 output equel to 12, why???

Answer 7

Thanks😍😍😍😍

Answer 8

1!=1
2!=1*2=2
3!=1*2*3=6

sum=1!+2!+3!=9

~ swim ~