Question

Which one of the numbers does not belong in the following series?
1 - 2 - 5 - 10 - 13 - 26 - 29 - 48
options- 1
5
26
29
48

Answer 1

$$\begin{gathered} 1\to 1 \\ 2\to 1\times 2 \\ 5\to 2+3 \\ 10\to 5\times 2 \\ 13\to 10+3 \\ 26\to 13\times 2 \\ 29\to 26+3 \\ 48\to 29\times 2=58 \\ \mathrm{So},48\mathrm{doesn}\text{'}\mathrm{t}\mathrm{belong}\mathrm{to}\mathrm{the}\mathrm{series} \end{gathered}$$