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Sequences and Series — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsSequences and Series1 Mark
Question
Two sequences cannot be in both $A.P.$ and $G.P.$ together.
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Answer

True.
Let us consider $G.P, a, ar$ and $ar^2$
If it is in $A.P$ then $\text{ar}-\text{a}\neq\text{ar}^2-\text{ar}$
Hence$,$ the given statement is True.

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