Discussion
2, 6, 12, 20, 30,…. 56
Answer: C
Correct answer: 42
Each term is the product of two consecutive numbers: \( 1\cdot2=2 \), \( 2\cdot3=6 \), \( 3\cdot4=12 \), \( 4\cdot5=20 \), \( 5\cdot6=30 \), so the next is \( 6\cdot7 = \mathbf{42} \), followed by \( 7\cdot8 = 56 \).
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