Medium
What is the remainder when 66^2 is divided by 13?
Explanation
Explanation
66^2 = 4356. Dividing 4356 by 13 gives 335 with remainder 1 (13 x 335 = 4355, and 4356 - 4355 = 1).
PRO TIP
Re-check your working by substituting the answer back into the original question.