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.

ObservationEach 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 pair11 and 13 → 1113

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