The number of significant figures in is .

Question

The number of significant figures in  is .

Canvas Classes · Accepted Answer

Strategy:
 Apply rules for leading and trailing zeros. Decimal points make trailing zeros significant.

Step 1: Analyze the digits in 0.00340
- : Leading zeros (not significant).
- : Non-zero digits (significant).
-  (at the end): Trailing zero in a number with a decimal point (significant).

Step 2: Count the total
There are 3 significant figures ().

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