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klesl · (This post was last modified: 11-23-2022 02:33 PM by klesl.)

According to me: Casio fx-991 ClassWiz (DE X or CE X) and Sharp EL-W506T/516T
The Sharp has a little bit more functions for matrix operations (det, trans, identity,fill, rand.mat, ref, rref) and can handle up 4×4 matrix and for random calulations (random number, random dice, random coins and random integers).
At the and I am using all three calcs (the 3rd is TI-30 Mathprint Pro) to get an ideal calculator :-D, but no.1 is ClassWiz