NECO Mathematics 2024 Objective — Question 1
Question 1 of 50 from the National Examinations Council (NECO) Mathematics 2024 Objective paper, with the correct answer and a full explanation.
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Multiply 3.4 × 10⁻⁵ by 7.1 × 10⁸ and leave the answer in standard form.
- A. A. 2.414 × 10²
- B. B. 2.414 × 10³
- C. C. 2.414 × 10⁴Correct
- D. D. 2.414 × 10⁵
Explanation
3.4×7.1=24.14. Then 3.4×10⁻⁵×7.1×10⁸=24.14×10⁻⁵⁺⁸=24.14×10³=2.414×10¹×10³=2.414×10⁴.
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