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Quantitative - Mathematics - Word Problems:

Exponents

MCQ - 302-13069

Question:

Which of the following is the standard form of 0.00001275?

  1. 1.275 × 10-5
  2. 1.275 × 105
  3. 127.5 × 10-7
  4. 1.275 × 105

Correct Answer: A

Explanation:

0.00001275

In standard form, the decimal point is placed after one digit from left. Hence; decimal point moves five places from left to right.

So the standard form is 1.275 × 10-5

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