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O-LevelMathematicsAlgebra and graphs4024/12 · May/June 2024 · Q183 Marks

Evaluate 125⁻²/³.

  1. (a)Evaluate 125⁻²/³.[1]
  2. (b)Simplify (a³/4a)⁻¹/².[2]

Mark scheme

Marking points from the official mark scheme (May/June 2024). The mark or mark type is shown in brackets.

  1. [1] (a) 1/5 or 0.2 final answer
  2. [2] (b) a³/8 final answer
  3. [1] B1 for answer aᵏ/8, k ≠ 0
  4. [1] M1 for one of the following seen (a⁶/²) or (a⁻¹/²) or a³/64 or 2³/a² or better

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About this question

Topic
Algebra and graphs, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source
O-Level Mathematics, May/June 2024 Paper 1 Variant 2, question 18.

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