hard · GMAT Quant

A cybersecurity firm monitors login attempts from three regions: Region A (50%), Region B (40%), and Region C (10%). Login attempts from Region A are flagged as suspicious 2% of the time, Region B 5% of the time, and Region C 15% of the time.

What is the total probability that a login attempt is flagged as suspicious?

  1. 0.045
  2. 0.073
  3. 0.030
  4. 0.150
  5. 0.220

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