Casio FX-9750GII-IH Quick Reference Manual page 4

From the Run menu many calculations can be entered by selecting
hyperbolic, probability/distribution, numeric (including differential and integration),
conversion, engineering, complex number and binary, octal, decimal and hexadecimal
calculations.
5. To calculate the possible number of different arrangements using 4 items selected
from among 10 items, enter the following from the Run home screen:

6. To calculate

7. To calculate

8. To calculate (

Casio "The Basics fx-9750GII"
iue10w4l
Note: The fixed decimal setting was changed back to Norm1.
 
3
10 2 , enter the following from the Run home screen:
iewjn10^3+2kl
Note: Calculations can be performed with complex numbers and
answers can be displayed in a+bi form.
3 
i 4 ; enter the following from the Run home screen:
iewj3+4qkl
  
3 2 ) i 15 i ; enter the following:
iejn3+2qk+15ql
i
. For example:
4