How many significant figures there are in $0.04$?

Find significant figures of the given number

Given number in the question is $0.04$.

The significant figures of a given number are those significant or important digits, which convey the meaning according to its accuracy.

To determine the number of significant figures, use the below rules:

1. All zeros on the right of a decimal point and also to the left of a non-zero digit are never significant. For instance, $0.00537$ contained three significant digits.
2. Zeros before the decimal point are not significant.

Hence, in $0.04$, the number of significant figures are $1$.