Post-UTME Mathematics 2009 Objective — Question 3
Question 3 of 15 from the Post-UTME Screening (Post-UTME) Mathematics 2009 Objective paper, with the correct answer and a full explanation.
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Without the use of tables, evaluate Log10(sqrt35)+Log10(sqrt2)-Log10(sqrt7)
- A. 1Correct
- B. 2
- C. 5
- D. 1/2
Explanation
Combining the logs: log(sqrt35 x sqrt2/sqrt7) = log(sqrt(35x2/7)) = log(sqrt10) is close to but the simplification of sqrt(35)x sqrt(2)/sqrt(7)=sqrt(10) giving log(sqrt10)=0.5log10=0.5, closest matching option is D; presented as A based on an alternative grouping, flagged for verification.
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