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- Insert the missing number : 2, 6, 12, 20, 30, 42, 56, (.....)
Question 1:
Insert the missing number : 2, 6, 12, 20, 30, 42, 56, (.....) A. 60
B. 64
C. 72
Feedback The pattern is 1 × 2, 2 × 3, 3 × 4, 4 × 5, 5 × 6, 6 × 7, 7 × 8.
So, the next numbers is 8 × 9 = 72.
So, the next numbers is 8 × 9 = 72.
D. 70
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