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Which of these fractions is the greatest?

Competition practiceNumber & Arithmetic
  • A9/10
  • B8/9
  • C7/8
  • D6/7

Step-by-Step Solution

Each fraction is 1 minus a unit fraction: 1 − 1/10, 1 − 1/9, 1 − 1/8, 1 − 1/7. The one subtracting the smallest amount is the greatest, so 9/10 (= 0.9) wins.
Answer: A) 9/10

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