[jaeyson]

how do i know if im using the right Elixir version for otp?

[sfusato]

Run elixir -v in the terminal. It will tell you with what OTP version it was compiled:

  Erlang/OTP 23 [erts-11.1.6] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]

  Elixir 1.11.3 (compiled with Erlang/OTP 23)