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The greatest term in the expansion of ${(3 + 5 x)}^{15}$ , when $x = 1 / 5$ is

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15C3313

15C4312

15C4310

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Correct option is D

α=(15+1)(5)(1/5)3+5(1/5)=4Thus, 4th and 5th terms are the greatest, and T5=15C4(3)11

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The greatest term in the expansion of (3 + 5x)15, when x = 1/5 is

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The greatest term in the expansion of ${(3 + 5 x)}^{15}$ , when $x = 1 / 5$ is