easy · GMAT Quant
A digital marketing agency tracks 110 ad campaigns for performance across three channels: Search, Social, and Display.
If 105 campaigns were successful on Search, 100 were successful on Social, and 95 were successful on Display, what is the absolute minimum number of campaigns that must have been successful on all three channels?
- 80
- 95
- 90
- 70
- 30
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