Question

 7        12         33        126        635     

A 7 Correct Answer Incorrect Answer
B 12 Correct Answer Incorrect Answer
C 33 Correct Answer Incorrect Answer
D 126 Correct Answer Incorrect Answer
E 635 Correct Answer Incorrect Answer

Solution

7 × 2 – 2 = 12 12 × 3 – 3 = 33 33 × 4 – 4 = 128 128 × 5 – 5 = 635

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