Question

Find the number of significant figures in the following 1) 0.042 2) 0.321 x 10-5 3) 42.000

Answer 1

in first the significant figures number is 2 and in second the significant numbers is 3 and in third the significant number is 2

Answer 2

Number of Significant Figures:

1) 0.042 : 2 significant Figures

2) 0.321 x 10-⁵: 3 Significant Figures

3) 42.000 : 2 Significant Figures

Explanation:

Significant Figures:

The significant figure is defined as the count of number of every important single digits in the coefficient of an expression.

Rules:

1. Non-zero values are always significant figures.
2. Between any two non-zero a zero digit is a significant figure.
3. In decimal portion a trailing zero and final zero is significant figure.
4. Trailing zero to the right side of decimal is always significant figure
5. Leading zeroes are not significant figure.
6. A exact number have infinite significant figures.

Project code #SPJ2

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