The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 10–3 are

Question

The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 \(\times\) 10^–3 are

1. ) 5, 1, 2
2. ) 5, 1, 5
3. ) 5, 5, 2
4. ) 4, 4, 2

Answer 1

Corret option is 1) 5,1,2

23.023 has 5 significant figures.

0.0003 has 1 significant figure.

2.1 \(\times\)10^–3 has 2 significant figures.