What is the next number in the sequence 3, 6, 9, 12, ?

Study for the ATandT Information Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the next number in the sequence 3, 6, 9, 12, ?

Explanation:
This is an arithmetic sequence where each term increases by a constant amount. The difference between consecutive terms is 3 (6−3=3, 9−6=3, 12−9=3). To continue the pattern, add 3 to the last term: 12+3=15. So the next number is 15. Choices like 18 or 21 would skip steps, and 12 would not advance the sequence.

This is an arithmetic sequence where each term increases by a constant amount. The difference between consecutive terms is 3 (6−3=3, 9−6=3, 12−9=3). To continue the pattern, add 3 to the last term: 12+3=15. So the next number is 15. Choices like 18 or 21 would skip steps, and 12 would not advance the sequence.

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