# How many significant figures are in the number 5400?

##### 1 Answer

Dec 6, 2015

I am assuming that

As such,

**PROMINENT DEFINITIONS**

- All
**nonzero digits**are significant. - A
**trailing zero**goes after a decimal point, or after all nonzero digits, or both, and no nonzero digits follow it.

**SPECIAL CONDITIONS**

- All "placeholder" zeroes AFTER a nonzero digit but BEFORE an implicit or explicit decimal point are subject to the following conditions:
- If an explicit decimal point is specified, they are significant if and only if a nonzero digit precedes them.
**If no explicit decimal point is specified, they are NOT significant.**

**Therefore, there are TWO significant figures (not four).**