When it comes to answering your questions, what would win in an intelligence, voice-activated battle between iPhone’s Siri, Android’s Google Now and Windows Phone’s Cortana? According to one consulting company, Google Now is the smartest option. Conducted by consulting firm Stone Temple, a team asked 3,000 voice queries to Siri, Google Now and Cortana. The questions asked were required to have a specific answer, including questions like “What’s 18 divided by two,” “Who invented Facebook,” and “What does the fox say?” The search engine assistant only received credit if they answered the question with the exact right answer.