How many significant figures are present in ?

Question

Canvas Classes · Accepted Answer

Strategy:
 Identifying significant figures requires applying three core rules: non-zero digits are always significant, captive zeros (between non-zeros) are significant, and trailing zeros count only if a decimal point is explicitly shown.

Step 1: Apply rules to each number
- : Leading zeros are non-significant; only 2 and 5 count  2
- : Zero is captive  3
- : Both zeros are captive  4
- : Trailing zeros without a decimal point are non-significant  3
- : Trailing zeros after a decimal point are

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