The number of significant digits in the number 126000 is

The number of significant digits in the number 126000 is
  1. 3
  2. 4
  3. 5
  4. 6

Solution

There are $3$ digits. The last three zeros are not significant.
There are $3$ significant digits because all non-zero digits are in a number are significant and the terminal zeros are not significant if there is no decimal point.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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