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  9. Q100

UKPSC PCS 2010 · Question 100 of 138

The product of two numbers is 120 and the sum of the squares is 289 the sum of numbers will be

Maths

  1. A20
  2. B23Correct
  3. C169
  4. D7

Answer: B. 23

Explanation

(x+y)^2 = 289 + 2x120 = 529, so x+y = 23.

Source: UKPSC Lower PCS Prelims 2010 (Combined Lower Subordinate Services Exam), held 2011

← Q99View full paper (138 questions)Q101 →

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