The sum of the coefficients in the expansion of $(x + 2 y + z)^{10}$ is

2^{10}

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4^{10}

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3^{10}

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1

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Solution

The correct option is B $4^{10}$
Given expression is $(x + 2 y + z)^{10}$
Substituting $x = y = z = 1$ , we get the sum of the coefficients as
$(1 + 2 + 1)^{10}$
$= 4^{10}$

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