Question

question 20 (1 point) listen the number $1.050 \times 10^{9}$ has how many significant figures? a) 2 b) 3 c) 4 d) 9 e) 13

Explanation:

Step1: Identify coefficient part

In scientific notation $1.050 \times 10^9$, focus on $1.050$.

Step2: Count significant figures

Non-zero digits (1,5) are significant; trapped zero (0 between 1 and 5) is significant; trailing zero after decimal (final 0) is significant. Count: $1, 0, 5, 0$ → 4 total.

Answer:

c) 4