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How many seconds are there in 2 hours 15 minutes 30 seconds? (Time still uses base-60 grouping from old Mesopotamia.)

Class 8Number Bases and Old Numeral SystemsNumber System
  • A8130
  • B13530
  • C8100
  • D2730

Step-by-Step Solution

2 h = s, 15 min = s, plus 30 s: 7200 + 900 + 30 = 8130 s.
Answer: A) 8130

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