Which fraction has a decimal expansion terminating exactly after (6) places?
Answer and explanation
Correct answer: (\frac{9}{64000})
Step 1: (64000=2^9\cdot 5^3), so it would give (9) places, not (6). Step 2: (15625=5^6), so (\frac{9}{15625}) terminates exactly after (6) places. Step 3: Calculate prime powers carefully.
Frequently asked questions
What is the correct answer to this question?
(\frac{9}{64000})
Why is this the correct answer?
Step 1: (64000=2^9\cdot 5^3), so it would give (9) places, not (6). Step 2: (15625=5^6), so (\frac{9}{15625}) terminates exactly after (6) places. Step 3: Calculate prime powers carefully.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Decimal expansion of rational numbers.
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