SSC JE Electrical Engineering 2017 Set 1 Paper

In the given question, the location of F is progressing gradually.
Condition (1) ⇒ F EE F EE ⇒ The location of F is 1${}^{\mathrm{st}}$ and 4${}^{\mathrm{th}}$.
Condition (2) ⇒ E F EE F E ⇒ The location of Fis 2${}^{\mathrm{nd}}$ and 5${}^{\mathrm{th}}$.
Condition (3) ⇒ EE F EE F ⇒ The location of Fis 3${}^{\mathrm{rd}}$ and 6${}^{\mathrm{th}}$. Like this
Condition (4) ⇒ F EE F EE ⇒ The location of F is 4${}^{\mathrm{th}}$ and 1st. That is the correct answer.