Find the one which does not belong to that group ?
Correct answer: C. PTRUT
- A. YCAEC
- B. KOMQO
- C. PTRUT
- D. GKIMK
- E. DHFJH
Explanation
In the valid groups, the alphabet positions follow the changes +4, -2, +4, -2, using alphabet positions such as G=7, K=11, I=9, M=13, K=11. For PTRUT, P=16, T=20, R=18, but the next letter should be V=22, not U=21. A student may choose another group by checking only the first three letters.
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Sequences describe ordered terms formed by a pattern, while series represent the sum of those terms. Questions cover arithmetic and geometric sequences, their nth terms, common difference or ratio, finite sums, and applications, with the sequence itself kept distinct from the corresponding series.
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