If the rth term in the expansion of \(\left( \dfrac{x}{3} - \dfrac{2 – McqOptions

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1.	If the rth term in the expansion of \(\left( \dfrac{x}{3} - \dfrac{2}{x^2} \right)^{10}\)contains x4, then r is equal to
A.	3
B.	4
C.	2
D.	None of these
Answer» B. 4

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