The number of terms in the expansion of $(x + y + z + u)^{5}$ is:

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189

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None

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Solution

The correct option is A
56

Number of terms in the expansion of $(x_{1} + x_{2} + . . . . + x_{n})^{n} i s^{n + r - 1} C_{n}$
the number of terms in the expansion of $(x + y + z + u)^{5} =^{5 + 4 - 1} C_{5} =^{8} C_{5} = 56$

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