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प्रश्न
Find the 5th term of the G.P. `5/2, 1, .........`
उत्तर
First term (a) = `5/2`
And common ratio (r) = `1/(5/2) = 2/5`
Now tn = arn – 1
`=>` 5th term = t5
= `5/2 xx (5/2)^(5 - 1)`
= `5/2 xx (2/5)^4`
= `(2/5)^3`
= `8/125`
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