A number of Millennials were surveyed regarding where they get their news. 4 get their news from the radio and from their best friend and from Instagram. 19 get their news from the radio. 25 get their news from their best friend. 21 get their news from Instagram. 11 get their news from the radio but not from their best friend and not from Instagram. 1 didn't get news from any of these three sources. 7 get their news from the radio and Instagram. 10 get their news from their best friend and from Instagram. How many were surveyed?
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.