Question 28
EasyOriginal questionWhich letter comes next in the series A, C, B, D, C, E, ?
Show the answer and explanation
CorrectNot quiteAnswer A
Correct answer: A
Explanation
The moves are +2, −1, +2, −1, +2 (A to C, C to B, B to D, D to C, C to E).
The next move is −1, so the letter after E is D.
Equivalently, the odd places read A, B, C and the next one is D.
Worth noting
F is the next letter of the other interleaved series (C, D, E), which belongs to the 8th place, not the 7th.
- Concept
- Alternating forward and backward moves
- Typical timeTypical
- 45 s
- Your timeYours
- —
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