Question

how many significant digits are there in \8.20 x 10^4\?

Explanation:

Step1: Recall significant - digit rules

Non - zero digits are always significant. Zeros between non - zero digits are significant. Trailing zeros in a number with a decimal point are significant.

Step2: Analyze the number 8.20×10⁴

In scientific notation \(a\times10^{n}\), the significant digits are in the coefficient \(a\). Here, \(a = 8.20\). The digit 8 and 2 are non - zero and the zero between them is significant. So, there are 3 significant digits.

Answer:

3