If we write like this AEBFCGDH .... Write the letters which come near to “J”.
F, G, M, N
The series is built from pairs: each pair is a letter followed by the letter four places after it in the alphabet — AE, BF, CG, DH.
Step 1 — Continuing the same rule gives the pairs EI, FJ, GK, HL, IM, JN, KO, so the series runs … D H E I F J G K H L I M J N K O …
Step 2 — J appears twice: once in “F J G”, where its neighbours are F and G, and once in “M J N”, where its neighbours are M and N.
Step 3 — The letters that come next to J are therefore F, G, M and N. H and L are never written beside J, so every choice containing H or L fails.
F, G, M, N option is correct.
Choose the option which completes the given figure series.

Select the correct option that will fill in the blank and complete the series.
18, 36, 108, 432, 2160, .............Select the correct option that will fill in the blank and complete the series.
52, 56, 65, 81, 106, ?Select the correct option that will fill in the blank and complete the series. 21, 43, 85, 171, 341, .......
Select the correct option that will fill in the blank and complete the series.
3, 5, 7, 9, 11, ?
2, 2, 2, 2, 2, ?