Qudurat GAT Practice
ArithmeticQuestion 368 of 550

What is the units digit of 3¹⁵?

  1. 1
  2. 3
  3. 9
  4. 7
Show answer

Correct answer: 7

The units digit of powers of 3 repeats: 3, 9, 7, 1. 15 divided by 4 leaves remainder 3, so the third digit in the cycle applies: 7.

Test structure: ETEC guide to the GAT

Practice arithmetic

Questions last reviewed: 21 October 2026