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\begin{tabular}{|c|c|}
\hline
A & 140 \\
\hline
B & 78 \\
\hline
C & 186 \\
\hline
D & 124 \\
\hline
\end{tabular}

Which statement is correct?

A. Material B is the least dense.
B. Material C is the most dense.
C. Material A is denser than Material D.
D. Material D is denser than Material A.


Sagot :

Certainly! Let's carefully analyze the given information step-by-step and verify which statements are correct by examining the densities of the materials:

The densities of the materials are as follows:
- Material A: 140
- Material B: 78
- Material C: 186
- Material D: 124

To determine the correct statements, we need to verify four specific points.

1. Material B is the least dense:
- Compare the densities of all materials: 140 (A), 78 (B), 186 (C), and 124 (D).
- The smallest value among these densities is 78 (Material B).
- Therefore, the statement "Material B is the least dense" is correct.

2. Material C is the most dense:
- Compare the densities of all materials: 140 (A), 78 (B), 186 (C), and 124 (D).
- The largest value among these densities is 186 (Material C).
- Therefore, the statement "Material C is the most dense" is correct.

3. Material A is denser than Material D:
- Compare the densities of Material A (140) and Material D (124).
- Since 140 (A) is greater than 124 (D), the statement "Material A is denser than Material D" is correct.

4. Material D is denser than Material A:
- Compare the densities of Material D (124) and Material A (140).
- Since 124 (D) is less than 140 (A), the statement "Material D is denser than Material A" is incorrect.

In conclusion, the correct statements are:
1. Material B is the least dense.
2. Material C is the most dense.
3. Material A is denser than Material D.

The incorrect statement is:
- Material D is denser than Material A.