A survey of 116 persons was conducted, and it was found that 37 people carried a cell phone, 59 people carried a tablet computer
, and 9 carried both a cell phone and a tablet. 1. How many people carried a cell phone or a tablet?
2. How many people carried neither a cell phone nor a tablet?
3. How many people carried a cell phone only?
4. How many people carried a tablet but not a cell phone?
