Which pair does NOT belong to the following sequence? B7, C8, F11, H13, J17
J17
Convert each letter to its position in the alphabet and compare with the paired number:
- B(2) + 5 = 7 → B7 ✓
- C(3) + 5 = 8 → C8 ✓
- F(6) + 5 = 11 → F11 ✓
- H(8) + 5 = 13 → H13 ✓
- J(10) + 5 = 15 ≠ 17 → J17 breaks the pattern. ✗
Hence the pair that does NOT belong is J17.
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