medium · GMAT Quant

A shipment of 120 smartphones is inspected. 75 have a high-resolution screen, 60 have a high-capacity battery, and 50 have a fast processor. Every smartphone in the shipment has at least one of these three features.

If the number of smartphones with exactly two features is three times the number of smartphones with all three features, how many smartphones have exactly one feature?

  1. 68
  2. 52
  3. 39
  4. 13
  5. 81

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