alleryCounting on by twos: 5, 7, 9, 11, 13. The next number is?
A17
B14
C16
D15
Answer & Solution
Correct answer: D. 15
1. Each term is 2 more than the one before.
2. 13 + 2 = 15.
3. 14 would add only 1.
_Source: Wikipedia, Arithmetic progression (CC BY-SA 4.0), Arithmetic progression_
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