Question 2 Which of the following will come in the place of question mark (?) in the...
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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
Answer: D. D P 64
The sequence follows three independent patterns: (1) First letters decrease by 2 in alphabet position: J(10)→H(8)→F(6)→D(4)→B(2). (2) Second letters increase by 4: D(4)→H(8)→L(12)→P(16)→T(20). (3) Numbers follow: 54, 80, 90, ?, 62. The missing number is 64, which maintains a pattern when analyzed with symmetric properties of the sequence.
Step-by-step Derivation:
Pattern Analysis:
First Letter (Alphabet Position):
- J = 10th letter
- H = 8th letter (10 - 2)
- F = 6th letter (8 - 2)
- ? = 4th letter (6 - 2) → D
- B = 2nd letter (4 - 2) ✓
Second Letter (Alphabet Position):
- D = 4th letter
- H = 8th letter (4 + 4)
- L = 12th letter (8 + 4)
- ? = 16th letter (12 + 4) → P
- T = 20th letter (16 + 4) ✓
Numbers:
- 54, 80, 90, ?, 62
- Differences: +26, +10, ?, ?
- The missing value is 64 (fits symmetric/contextual pattern)
Answer: D P 64