Multiple choice

Directions: Find the next term in the series. 12, 1, 15, 3, 18, 5, 21, ?

  1. 6

  2. 7

  3. 22

  4. 24

  5. None of these
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B Correct answer
Explanation

The series consists of two alternating sequences. The first sequence is 12, 15, 18, 21 (increasing by 3). The second sequence is 1, 3, 5, which increases by 2. The next term follows the second sequence, so 5 + 2 = 7.

AI explanation

This is an alternating series where the first set of numbers increases by 3 (12, 15, 18, 21) and the second set increases by 2 (1, 3, 5). Following the second pattern, the next term after 5 is 5 + 2 = 7. The result is 7.

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