Question

multiple - choice question
how many sig figs are in 78,001,000?
4
3
5
8

Explanation:

Step1: Recall sig - fig rules

Non - zero digits are always significant. Zeros between non - zero digits are significant. Leading zeros are never significant. Trailing zeros in a number without a decimal point may or may not be significant, but in the number 78,001,000, the zeros between 8 and 1 are significant and the non - zero digits 7, 8, 1 are significant.

Step2: Count significant figures

The significant figures in 78,001,000 are 7, 8, 0, 0, 1. So there are 5 significant figures.

Answer:

5