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Question 1 of 6 What number completes the sequence below? Enter your answer b 9 12 15 18 11 14 17 20 ?​

1 Answer

4 votes

Answer:

23

Explanation:

9+3=12, 12+15=18, 11+3=14, 14+3=17, 17+3=20, 20+3=23

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