All challenges
Multiple ChoiceBeginner 30s

NaN Type

typeof NaN is:
Options
  1. 1'number'
  2. 2'NaN'
  3. 3'undefined'
  4. 4'object'

Think you can answer under pressure?

Get matched and answer live questions in 3-minute 1v1 battles. Elo ranking, badge tiers and bragging rights on the line.

Play this in a 3-minute battle