1 votes 1 votes Let $p$ be a prime number. What is the number of elements in the group $\mathbb{Q} / \mathbb{Z}$ that have order exactly $p?$ $0$ $p-1$ $p$ $\infty$ Others tifrmaths2022 + – admin asked Sep 9, 2022 • edited Mar 20, 2023 by Lakshman Bhaiya admin 262 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.