If  then x is equal to from Quantitative Aptitude Surd

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 Multiple Choice QuestionsMultiple Choice Questions

1.

The value of open curly brackets open parentheses straight n square root of straight x squared end root close parentheses to the power of straight n over 2 end exponent close curly brackets squared is

  • x

  • straight x to the power of straight n divided by 2 end exponent
  • straight x squared
  • straight x squared
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2.

If  then find the value of n.

  • 2

  • 3

  • 4

  • 5

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3.

The value of  would be

  • 1

  • 0

  • 0

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4.

When xm is multiplied by x,product is 1. The relation between m and n is

  • mn = 1

  • m = n

  • m + n = 1

  • m + n = 1

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5.

If  then the value of n is

  • 13

  • 14

  • 15

  • 16

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6.

If 2x+4 - 2x+2 = 3,  then the value of 'x' is

  • 0

  • 2

  • -1

  • -2

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7.

The value of fraction numerator 3 space cross times space 9 to the power of straight n plus 1 end exponent space plus space 9 space cross times space 3 to the power of 2 straight n minus 1 end exponent over denominator 9 space cross times space 3 to the power of 2 straight n end exponent space minus space 6 space cross times space 9 to the power of straight n minus 1 end exponent end fraction is equal to

  • 3 3 over 5

  • 3 2 over 5

  • 3 1 fifth

  • 3


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8.

If open parentheses 3 over 5 close parentheses cubed space open parentheses 3 over 5 close parentheses to the power of negative 6 end exponent space equals space open parentheses 3 over 5 close parentheses to the power of 2 straight x minus 1 end exponent comma then x is equal to

  • -2

  • 2

  • -1

  • 1


C.

-1

rightwards double arrow space space space space space open parentheses 3 over 5 close parentheses cubed space open parentheses 3 over 5 close parentheses to the power of negative 6 end exponent space equals space open parentheses 3 over 5 close parentheses to the power of 2 straight x minus 1 end exponent space space
rightwards double arrow space space space space space space space space open parentheses 3 over 5 close parentheses to the power of 2 straight x minus 1 end exponent space equals space space open parentheses 3 over 5 close parentheses to the power of 3 minus 6 end exponent
rightwards double arrow space space space space space space space space 2 straight x minus 1 space equals space minus 3
rightwards double arrow space space space space space space space space 2 straight x space equals space minus 3 space plus space 1
rightwards double arrow space space space space space space straight x space equals space fraction numerator negative 2 over denominator 2 end fraction space equals space minus 1

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