Question

The number 1.050 x 10⁹ has how many significant figures?
1) 1
2) 2
3) 3
4) 4

Answer 1

The number 1.050 x 10⁹ contains four significant figures, as all nonzero digits and zeros that are not placeholders in scientific notation are significant.

Step-by-step explanation:

The number 1.050 x 10⁹ consists of four significant figures. When writing numbers in scientific notation, all the digits that appear before the multiplier of the power of ten are considered significant. The number in this format explicitly indicates how precise the measurement is.

The digit '1', and the three non-placeholder zeros demonstrate that there are four significant figures, as placeholder zeros are not counted unless there is a decimal point present to indicate precision.

Answer 2

4) 4

Step-by-step explanation:

You want to know the number of significant figures in 1.050 × 10⁹.

Coefficient

The coefficient of the number is 1.050. When a number is written in scientific notation, all of the coefficient digits are considered significant. That includes the trailing zero.

The number has 4 significant digits, choice 4.

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