Maths · Arithmetic and Geometric progressions
87,78,69 Write the next number of the series.
87,78,69 Write the next number of the series.
- A. 26
- B. 60
- C. 12
- D. zero
Step-by-step solution
The series decreases by 9 each step: 87 - 9 = 78, 78 - 9 = 69, so the next term is 69 - 9 = 60.
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