The value of $(- 1)^{91}$ is

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-1

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None of these

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Solution

The correct option is C -1
$(- 1)^{91} = (- 1)^{90 + 1} \times (- 1)^{1} = 1 \times (- 1) = - 1$

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(- 1)^{91}

If (√x+2)+(√x+8)=10 ,then the value of (X+191/100)=?

{\{{(23 + 2^{2})}^{2 / 3} + (140 - 19)^{1 / 2}\}}^{2},

20 + 19 \frac{1}{3} + 18 \frac{2}{3} +

310

E = \frac{(1 + 17) (1 + \frac{17}{2}) (1 + \frac{17}{3}) . . . . . . (1 + \frac{17}{19})}{(1 + 19) (1 + \frac{19}{2}) (1 + \frac{19}{3}) . . . . . (1 + \frac{19}{17})}

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