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#10869 Bangla Language & Literature General Level 0

<p>a+b+c = 9,ab+bc+ca = 31 হয়,তবে a<sup>2</sup>+b<sup>2</sup>+c<sup>2</sup> = ?</p>

  1. A 17
  2. B 18
  3. C 19
  4. D 20
Answer: C - 19

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