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                                    In an office, 5 cabins have got AC, 7 cabins have got fans. If 2 cabins have both AC and fan. What is the number of cabins in the office? | 
                            
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Answer»  In an office, 5 cabins have got AC, 7 cabins have got fans. If 2 cabins have both AC and fan. What is the number of cabins in the office?  | 
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