Question

give the number of significant figures in following numbers
1) 15.00 kg
2) 0.0042 kg
3) 242.005 kg
4) 3.638 ×10^2 kg
Options
a) 2,3,4,6
b) 4,2,6,4
c) 2,4,3,4
d) 2,2,3,4
​

Answer 1

Answer:

2) 4,2,6,4.

Explanation:

15.00 4

0.0042 2

242.005 6

3.638. 4(the powers are not significant)