A positive two-digit number is written at random. Determine the probability that the number will be at least 75. Please put answer in the form of a fraction.

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Answer:

5/18

Step-by-step explanation:

Positive two-digit numbers are:

  • Numbers in 10 - 99 interval

Total two-digit numbers:

  • 99 -9 = 90

Number of two-digit numbers ≥ 75:

  • 99 - 74 = 25

Probability that the number is at least 75:

  • 25/90 = 5/18

Answer is 5/18