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Number series (concatenated odd pairs): Continue the side-by-side odd-number progression. Given sequence: 13, 35, 57, 79, 911, ? Identify the next concatenated pair of consecutive odd numbers. Choose the correct value.

Difficulty: Easy

1110
1112
1113
1315

Correct Answer: 1113

Explanation:

Observation
Each term is formed by writing two consecutive odd numbers side by side:

1 and 3 → 13
3 and 5 → 35
5 and 7 → 57
7 and 9 → 79
9 and 11 → 911

Next pair
11 and 13 → 1113

Common pitfalls
Interpreting 911 as a single pattern jump; it is 9 concatenated with 11.

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