Class 8 Exam > Class 8 Questions > 13 × 10-7 Km is the standard form of wh...
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13 × 10-7 Km is the standard form of which of the following
- a)0.000000013 Km
- b)0.0000013 Km
- c)0.000000000013 Km
- d)0.00000000013 Km
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
13 × 10-7 Km is the standard form of which of the followinga)0.0...
13×10^ -7
=> 13÷10^ 7
=>0.00,00,013 km (option B)
This is because, negative exponent means that reciprocal of the base to make exponents positive. In this case, 10^ -7 is equal to 1/10^7, and 13×1 is 13, hence, 13×10^-7 is 13×(1/10^7). That is 13×(1/1,00,00,000) => 13/1,00,00,000 => 0.00,00,013 km. Hence, option b is correct.
=> 13÷10^ 7
=>0.00,00,013 km (option B)
This is because, negative exponent means that reciprocal of the base to make exponents positive. In this case, 10^ -7 is equal to 1/10^7, and 13×1 is 13, hence, 13×10^-7 is 13×(1/10^7). That is 13×(1/1,00,00,000) => 13/1,00,00,000 => 0.00,00,013 km. Hence, option b is correct.
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13 × 10-7 Km is the standard form of which of the followinga)0.000000013 Km b)0.0000013 Km c)0.000000000013 Km d)0.00000000013 KmCorrect answer is option 'B'. Can you explain this answer?
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