Multiple choice general knowledge math & puzzles

They're selling computers ____ cheap at Jack's Tech Shop

  1. dirty

  2. dungy

  3. dirt

  4. grunge

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The idiom is 'dirt cheap' - meaning extremely inexpensive or very low in price. 'Dirty', 'dungy', and 'grunge' are not part of this expression.