Pi is the sixteenth letter of the Greek alphabet.

Quick Scoop

  • The Greek alphabet has 24 letters in a fixed order, starting with alpha (1st), beta (2nd), gamma (3rd), and so on.
  • In this sequence, pi (Π, π) comes after omicron and before rho, giving it the 16th position.
  • So if alpha is the first letter, pi is the sixteenth letter in that same alphabet.

In forum-style riddles, this is often phrased just like your question: “Alpha is the first letter of this alphabet, what letter is pi?” The intended answer is simply: the sixteenth letter.

TL;DR: Pi is the sixteenth letter of the Greek alphabet.

Information gathered from public forums or data available on the internet and portrayed here.