Exams › IBPS PO › Quantitative Aptitude

Which of the following statements is not correct?

1. log10 10 = 1
2. log(2 + 3) = log(2 × 3)
3. log10 1 = 0
4. log(1 + 2 + 3) = log 1 + log 2 + log 3

Correct answer: log(2 + 3) = log(2 × 3)

Solution

The property of logarithms is \(\log(ab)=\log a+\log b\), not \(\log(a+b)=\log(ab)\). Therefore the statement \(\log(2+3)=\log(2\times3)\) is false.

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