Question
Which number is correctly written in scientific notation?(1 point)
Responses
10 × 103
10 × 103 - incorrect
0.2520 × 10−3
0.2520 × 10−3 - no response given
2.520 × 103
2.520 × 103 - no response given
25.20 × 10^3
Responses
10 × 103
10 × 103 - incorrect
0.2520 × 10−3
0.2520 × 10−3 - no response given
2.520 × 103
2.520 × 103 - no response given
25.20 × 10^3
Answers
GPT-4o mini
In scientific notation, the number must be in the format \( a \times 10^n \), where \( 1 \leq a < 10 \) and \( n \) is an integer.
Let's evaluate each option:
1. **10 × 10³**: This is incorrect because the coefficient (10) is not between 1 and 10.
2. **0.2520 × 10⁻³**: This is also incorrect because the coefficient (0.2520) is less than 1.
3. **2.520 × 10³**: This is correctly written in scientific notation since the coefficient (2.520) is between 1 and 10.
4. **25.20 × 10³**: This is incorrect because the coefficient (25.20) is greater than 10.
Therefore, the only number written in correct scientific notation is **2.520 × 10³**.
Let's evaluate each option:
1. **10 × 10³**: This is incorrect because the coefficient (10) is not between 1 and 10.
2. **0.2520 × 10⁻³**: This is also incorrect because the coefficient (0.2520) is less than 1.
3. **2.520 × 10³**: This is correctly written in scientific notation since the coefficient (2.520) is between 1 and 10.
4. **25.20 × 10³**: This is incorrect because the coefficient (25.20) is greater than 10.
Therefore, the only number written in correct scientific notation is **2.520 × 10³**.