Which of the following number gives four significant digits?
(a) 2020 (b) 20.20 (c) 2000 (d) 0.020
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Answer:
(d) 0.020
Explanation:
1. Non-zero digits are always significant.
2. Any zeros between two significant digits are significant.
3. A final zero or trailing zeros in the decimal portion ONLY are significant.
According to these rules, (d) is the correct option
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