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O-LevelMathematicsNumber4024/12 · May/June 2018 · Q204 Marks

N = 2 × 10⁸

  1. (a)(i)Giving your answers in standard form, find the value of N × 700,[1]
  2. (a)(ii)1/N.[2]
  3. (b)Find the smallest positive integer M, given that MN is a cube number.[1]

Mark scheme

Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.

  1. [1] 1.4 x 10¹¹ cao
  2. [1] B1 for 1/2 × 10⁻⁸ seen or 0.5×10⁻⁸ seen or 0.000 000 005 seen
  3. [1] 5 x 10⁻⁹ cao
  4. [1] 5

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About this question

Topic
Number, O-Level Mathematics (syllabus 4024). Structured question, 4 marks.
Source
O-Level Mathematics, May/June 2018 Paper 1 Variant 2, question 20.

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