Logarithms

Quantitative Aptitude Logarithms Study Material

Common Logarithms:

  • Logarithms to the base 10 are known as common logarithms.
  • The logarithm of a number contains two parts, namely ‘characteristic’ and ‘mantissa’.

Characteristic: The internal part of the logarithm of a number is called its characteristic.

Case I: When the number is greater than 1.

  • In this case, the characteristic is one less than the number of digits in the left of the decimal point in the given number.

Case IIWhen the number is less than 1.

  • In this case, the characteristic is one more than the number of zeros between the decimal point and the first significant digit of the number and it is negative.

Bank PO, Common Admission Test, Mathematics, SSC, Syllabus, GMAT, CAT

Bank PO, Common Admission Test, Mathematics, SSC, Syllabus, GMAT, CAT

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