Multiple choice general knowledge

Find the odd one out?(The odd one is not a google tool)

  1. Squared

  2. Public Data Explorer

  3. Sets

  4. Cubed

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

Google Squared, Public Data Explorer, and Sets are/were all Google services. 'Cubed' is not a Google tool - it's a mathematical operation (raising a number to the third power, x³).