Find The $10 ^ { \text {th } }$ Term of the Geometric Sequence With

question 99

Multiple Choice

Find the $10 ^ { \text {th } }$ term of the geometric sequence with $a _ { 1 } = 243$ and $r = \frac { 1 } { 3 }$

• A) \(\frac { 1 } { 243 }\)
• B) \(\frac { 1 } { 729 }\)
• C) \(\frac { 1 } { 81 }\)
• D) \(\frac { 1 } { 9 }\)

---

Definitions:

Lithium Diisopropylamide

A strong non-nucleophilic base, represented as LDA, used in organic synthesis for deprotonation reactions.

Methyllithium

A highly reactive organolithium reagent used in organic synthesis to form carbon-carbon bonds.

Pyridine

A basic nitrogen-containing heterocyclic aromatic compound, often used as a solvent and in the synthesis of various organic compounds.

LDA

Lithium diisopropylamide, a strong, non-nucleophilic base used in organic synthesis to deprotonate weak acids.