Class 9 Mathematics · Chapter 2 · Test 3
Common and Natural Logarithms
35 MCQs
35 questions · 30 min · 35 marks
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Sample questions
The first 5 of 35. Try each one, then tap to see the answer.
Question 1
Who introduced the word logarithm according to the textbook?
- AHenry Briggs
- BJohn Napier
- CLeonhard Euler
- DAl-Khwarizmi
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Answer: B
John Napier introduced the word logarithm.
Question 2
Who extended the work on common logarithms and developed logarithm tables?
- AJohn Napier
- BHenry Briggs
- CLeonhard Euler
- DIsaac Newton
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Answer: B
Henry Briggs advanced common logarithms and logarithmic tables.
Question 3
What are the two parts of a common logarithm?
- ABase and argument
- BCharacteristic and mantissa
- CIndex and radicand
- DProduct and quotient
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Answer: B
A common logarithm is expressed as characteristic plus mantissa.
Question 4
For a number greater than or equal to 1 how is the characteristic found?
- ANumber of digits left of decimal minus one
- BNumber of digits right of decimal
- CNumber of zeros after decimal
- DNumber of digits plus one
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Answer: A
For numbers at least one the characteristic is the number of integer digits minus one.
Question 5
What is the characteristic of log 725?
- A0
- B1
- C2
- D3
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Answer: C
There are three digits to the left of the decimal so the characteristic is 3 minus 1 equals 2.
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