316 . সমাধান করুনঃ x2 - 2x - 15 > 0 .

  • A. s = (x : x > 5 অথবা x < -3)
  • B. s = (x : x < 5 অথবা x > -3)
  • C. s = (x : x > 5 অথবা x > -3)
  • D. s = (x : x < 5 অথবা x < -3)
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317 . If 6 - 4x ≤ 14, then

  • A. x ≤ 2
  • B. x ≥ 2
  • C. x ≤ -2
  • D. x ≥ -2
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321 . 3.2n - 4.2n - 22n - 2n + 1 = কত?

  • A. 2n + 1
  • B. 2n - 1
  • C. - 2
  • D. 4
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প্রতিরক্ষা মন্ত্রণালয়ের আবহাওয়া অধিদপ্তরের সহকারী আবহাওয়াবিদ-২৭.০৪.২০০৭
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