Challenge: Generate 24 in the X register / display

[pinkman]

My apologies for this answer: I did not have the time to participate, and before reading the above answers I post mine. Sorry if I’m repeating answers or giving some already found (and I guess I’m far from the best answers).
Tested on HP42s but did not want to use STO+X to make it work on 15c or other classic RPN.

That said, here are my attempts:

Code:


1 10^x 1 + 1 + ENTER +
2 10^x 2 / 2 / DSE
3 3 x^y 3 -
4 4 + 4 x^2 +
5 5 5 * DSE
6 6 6 + ENTER +
7 7 * 7 SQRT IP / IP
8 8 + 8 +
9 9 + LASTX + 9 SQRT -
0 0 10^x 10^x 0 e^x e^x * LASTX - IP

Now I can’t wait to see the answers for 9 and 0!