Mathematics - Sequence & Series Question with Solution | TestHub

MathematicsSequence & SeriesG.P.Easy2 minQB

MathematicsEasyinteger

Three numbers, the third of which is 4 from a decreasing G.P. If the last term is replaced by 3, the three numbers form an A.P, then the first number of the G.P. is

Answer:

Solution:

$a, ar, ar^{2}$

$2 ar = a + 3 \Rightarrow a = \frac{3}{2 r - 1} ar^{2} = 4 Solve, r = 2/3, a = 9$

Stream:JEESubject:MathematicsTopic:Sequence & SeriesSubtopic:G.P.

⏱ 2mℹ️ Source: QB

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