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  9. Q23

BPSC (Bihar PCS) 2019 · Question 23 of 148

If x3 – y3 = 117/8 and x - y = 3/2then the value of x2 + xy + y2 will be

Mental Ability

  1. A
  2. B4
  3. C3Correct
  4. D2
  5. ENone of the above/More than one of the above

Answer: C. 3

Explanation

Using x^3-y^3 = (x-y)(x^2+xy+y^2), the key gives option C.

Source: Jagranjosh

← Q22View full paper (148 questions)Q24 →

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