Question

Do cancer cells undergo mitosis at an abnormally fast rate?

Answer 1

literally we cant call a cell "cancer cell" unless its division is out of control

Explanation:

Mitosis is closely controlled by the genes inside every cell. Sometimes this control can go wrong. If that happens in just a single cell, it can replicate itself to make new cells that are also out of control. These are cancer cells.
so cancer cells do undergo mitosis at a fast rate.