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SAT数学-数列 Example 03

Question 1
Single-color tokens of blue, red, green, or yellow are placed in a single line so that the pattern of blue, red, green, yellow, blue, red, green, yellow repeats throughout. If the first token in the line is blue, which of the following tokens is green?
A
117th
B
118th
C
119th
D
120th
E
121st
Question 1 Explanation: 
There is 1 question to complete.
Return
Shaded items are complete.
1
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