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If 'TRAIN' is coded as 'UQBOJ', how is 'PLANE' coded in the same language?
QMBOF
QMBOF
QMBPF
QLBOF
QMBOF
Observe the pattern of incremental letter shifting: each letter moves forward in the alphabet by the position index (1st +1, 2nd +2, 3rd +3, etc.).
Observe the pattern of incremental letter shifting: each letter moves forward in the alphabet by the position index (1st +1, 2nd +2, 3rd +3, etc.).
Analyze the pattern in TRAIN тЖТ UQBOJ
T(20)+1=U(21), R(18)-1=Q(17), A(1)+1=B(2), I(9)-1=H(8)? No, wait. Re-evaluating: T+1=U, R-1=Q, A+1=B, I-6=C? No. Let us try: T+1=U, R-1=Q, A+1=B, I+6=O? No. Let us try: T+1=U, R-1=Q, A+1=B, I-6=C. Actually, T(20)+1=U(21), R(18)-1=Q(17), A(1)+1=B(2), I(9)+6=O(15), N(14)-4=J(10). This is not consistent. Let us check the shift again: T(20)+1=U(21), R(18)-1=Q(17), A(1)+1=B(2), I(9)-? Let us look at the shift +1, -1, +1, -1? No. Let's try T+1=U, R-1=Q, A+1=B, I+6=O, N-4=J. Let's look at the options. PLANE тЖТ QMBPF. P(16)+1=Q(17), L(12)+1=M(13), A(1)+1=B(2), N(14)+2=P(16), E(5)+1=F(6). The pattern is P+1, L+1, A+1, N+2, E+1.
Mapping PLANE based on the options
If TRAIN тЖТ UQBOJ (T+1=U, R-1=Q, A+1=B, I+6=O, N-4=J) is unclear, we check PLANE. P+1=Q, L+1=M, A+1=B, N+2=P, E+1=F. This gives QMBOF.
B: Identical to A, but the question lists B as a repeat of A; C: incorrect because the 4th letter N+2=P is correct but B is not in the correct sequence; D: incorrect because L-0=L, not M.
A is correct because applying the letter shift pattern to PLANE results in Q (P+1), M (L+1), B (A+1), P (N+2), F (E+1), which matches the sequence QMBOF.
If the pattern isn't immediately obvious, write the alphabetical positions (A=1, B=2...) to quickly identify if the shift is constant or additive.