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The number of significant figures of the number 70.00 is four. If there is a decimal point in the number, start counting from the left. The first significant figure is 7. All the zeroes that follow this number are also significant. There are three zeroes making the number of significant figures four. The answer is letter c.

Answer:

Option c - 4

Step-by-step explanation:

Given : Measurement 70.00 g.

To find : Determine the number of significant digits in the measurement ?

Solution :

Rules to find significant digits are :

1) All non-zero numbers are significant.

2) Zeros between non-zero numbers are significant.

3) Leading zeros before a number are not significant.

4) Trailing zeros after a number are not significant unless there’s a decimal point.

According to 4 rule,

The decimal point indicates that the trailing zeros are significant and should be counted.

So, In 70.00 there are four significant digits.

Therefore, Option c is correct.

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