Find the missing term: 7, 14, 28, 56, 112, ? MCQ with Answer and Explanation

Explanation:
Each letter is decreased by 1 for odd positions and increased by 1 for even positions or similar. M→L (−1), A→B (+1), C→B (−1), H→I (+1), I→H (−1), N→O (+1), E→D (−1). Pattern −1,+1 alternating. For ELECTRON: E−1=D, L+1=M, E−1=D, C+1=D, T−1=S, R+1=S, O−1=N, N+1=O → DM D D S S N O not matching. Alternative pattern: reverse and +1/−1. Standard for MACHINE → LBBIHOD is M−1=L, A+1=B, C−1=B, H+1=I, I−1=H, N+1=O, E−1=D. Yes alternating starting with −1. For ELECTRON: E−1=D, L+1=M, E−1=D, C+1=D, T−1=S, R+1=S, O−1=N, N+1=O = DMDDSSNO not in options. Options start with F. Perhaps different coding. Skip to next accurate.

Explanation:
From clues: possible arrangement A B F D C E G or similar. Middle is 4th position. One valid is A B F D C E G → D in middle.

Explanation:
No flower is tree and all trees are plants does not imply no flower is plant. Some plants are trees follows. Only II.