PSAT Math Multiple-Choice Question 265: Answer and Explanation
Question: 265
One cell has a diameter of 5 × 10-8 meter, and another cell has a diameter of 6 × 10-9 meter. How many times larger is the first cell?
- A. 2
- B. 4
- C. 8
- D. 16
Correct Answer: C
Explanation:
The correct solution is 8 because 5 × 10 - 8 is 0.00000005 and 6 × 10 - 9 is 0.000000006. So, the first cell is about 8 times larger. See Lesson: Powers, Exponents, Roots, and Radicals.
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