How many 3-digit numbers are divisible by 7?
✓ Correct Answer: Option B
First: 105 (7×15). Last: 994 (7×142). Count = 142 − 15 + 1 = 128. Actually 7×15=105, 7×142=994. Count = 142−14 = 128. Let me recount: floor(999/7)=142, floor(99/7)=14. 142−14=128. Hmm, 128.
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This 3-level GMAT Exam Prep question from the Quantitative Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
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