8. Sequences and Series
easy

गुणोत्तर श्रेणी $5,25,125 \ldots$ का $10$ वाँ तथा $n$ वाँ पद ज्ञात कीजिए ?

A

$5^{n}$

B

$5^{n}$

C

$5^{n}$

D

$5^{n}$

Solution

Here $a=5$ and $r=5 .$ Thus, $a_{10}=5(5)^{10-1}=5(5)^{9}=5^{10}$

and $\quad a_{n}=a r^{n-1}=5(5)^{n-1}=5^{n}$

Standard 11
Mathematics

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