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Counting down by tens: 100, 90, 80, 70. Next is?

A50
B60
C75
D65
Answer & Solution
Correct answer: B. 60
1. Each term is 10 less than the one before. 2. The common difference is -10. 3. 70 - 10 = 60. _Source: Wikipedia, Arithmetic progression (CC BY-SA 4.0), Arithmetic progression_
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