Fill the blank space to complete the series 1 2 4 5 7 8 10 11 ........

Quantitative Aptitiude (CLAT) Number series

Fill the blank space to complete the series: 1, 2, 4, 5, 7, 8, 10, 11, ....

The difference between consecutive terms follow a pattern of 1,2,1,2......and so on
Hence, next term is 13.
Hence, option 2 is the correct answer.

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