Which of the following will come in the place of question mark (?) in the following...
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Which of the following will come in the place of question mark (?) in the following sequence so that it will complete the sequence?**
J D 54, H H 80, F L 90, (?), B T 62
Show answer & explanation
The sequence follows three independent patterns: (1) First letters decrease by 2 in alphabet position (J→H→F→D→B), (2) Second letters increase by 4 (D→H→L→P→T), (3) Numbers follow: 54, 80, 90, ?, 62. The missing number is 64, which follows a pattern where differences are +26, +10, -26, -2 (alternating larger and smaller changes). The answer D P 64 satisfies all three patterns.
Step-by-step Derivation:
Step 1: Analyze first letters (J, H, F, ?, B)
- J is position 10, H is position 8, F is position 6, B is position 2
- Pattern: decreasing by 2 each time → 10, 8, 6, 4, 2
- Position 4 = D
Step 2: Analyze second letters (D, H, L, ?, T)
- D is position 4, H is position 8, L is position 12, T is position 20
- Pattern: +4, +4, +4, +4 positions
- Position 12+4 = 16 = P
Step 3: Analyze numbers (54, 80, 90, ?, 62)
- Differences: 80-54=26, 90-80=10
- Pattern alternates: +26, +10, -26, -2 (or similar symmetric pattern)
- 90-26 = 64, then 64-2 = 62 ✓
- Missing number: 64
Conclusion: D P 64