Three friends, A, B and C work in an office, in the IT, HR and Banking departments. A works in the banking department and works 8 hours a day, but, the one who works in the HR department works only 5 hours a day. B is lazy and does not like to work the entire day. B has maths background but is not part of the banking department
Who works in HR department?
The correct answer is D
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4, 5, 18, 95, 672, ?.
