Multiple choice

Complete the series given below by finding the missing term. 1, 2, 7, 7, 13, 12, ?

  1. 19

  2. 18

  3. 12

  4. 14
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A Correct answer
Explanation

The series is two interleaved sequences: 1, 7, 13, ... (adding 6) and 2, 7, 12, ... (adding 5). The next term in the first sequence is 13 + 6 = 19.

AI explanation

The series is formed by interleaving two separate patterns. The first pattern is 1, 7, 13, and the next number is found by adding 6 to 13. The second pattern is 2, 7, 12, which also increases by 5. The missing term belongs to the first pattern, making it 13 plus 6, which equals 19.

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