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 Multiple Choice QuestionsMultiple Choice Questions

91.

If straight a plus 1 over straight a plus 2 space equals space 0 comma then the value of open parentheses straight a to the power of 37 minus 1 over straight a to the power of 100 close parentheses is

  • 0

  • -2

  • 1

  • 1

129 Views

92.

If a + b + c = 0, then the value of fraction numerator straight a squared plus space straight b squared space plus space straight c squared over denominator straight a squared space minus bc end fraction is

  • 0

  • 1

  • 2

  • 2

103 Views

93.

If a + b + c = 6,  a2 + b2 + c2 = 14  and a3 + b3 + c3 = 36, then the value of abc is

  • 3

  • 6

  • 9

  • 9

175 Views

94.

If open parentheses straight x plus 1 over straight x close parentheses squared space equals space 3, then the value of (x72 + x66 + x54 + x36 + x24 + x6 +1) is



  • 1

  • 2

  • 3

  • 3

128 Views

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95.

If open parentheses straight x plus 1 over straight x close parentheses squared space equals space 3 comma then the value of x206 + x200 + x90 + x84 + x18 + x12 + x6 + 1 is

  • 0

  • 1

  • 84

  • 84


A.

0

open parentheses straight x plus 1 over straight x close parentheses squared space equals space 3
rightwards double arrow space space space straight x space plus space 1 over straight x space equals space square root of 3
If space space straight x space plus space 1 over straight x space equals space straight a comma space space space then space straight x cubed space plus space 1 over straight x cubed space equals space straight a cubed space minus space 3 straight a
therefore space space straight x cubed space plus space 1 over straight x cubed space equals space left parenthesis square root of 3 right parenthesis cubed space minus space 3 square root of 3 space equals space 0
rightwards double arrow space space space space straight x to the power of 6 space plus space 1 space equals space 0

therefore space space space straight x to the power of 206 space plus space straight x to the power of 200 space plus space straight x to the power of 90 space space plus space straight x to the power of 84 space plus space straight x to the power of 18 space plus space straight x to the power of 12 space plus space straight x to the power of 6 space plus space 1
equals space space straight x to the power of 200 left parenthesis straight x to the power of 6 space plus space 1 right parenthesis space plus space straight x to the power of 84 left parenthesis straight x to the power of 6 plus 1 right parenthesis space plus space straight x to the power of 12 left parenthesis straight x to the power of 6 space plus space 1 right parenthesis space plus space left parenthesis straight x to the power of 6 plus 1 right parenthesis
space equals space 0
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96.

If straight n space equals space 7 space plus space 4 square root of 3 comma then the value of open parentheses square root of straight n plus fraction numerator 1 over denominator square root of straight n end fraction close parentheses is

  • 2 square root of 3
  • 4

  • -4

  • -4

90 Views

97.

P varies inversely with the product of Q and R. When Q = 6 and R = 12, P = 75. When Q = 5, R = 10, then P is

  • 75

  • 6

  • 108

  • 108

256 Views

98.

If a3b = abc  = 180,  a, b, c are positive integers, then the value of c is

  • 110

  • 1

  • 4

  • 4

1054 Views

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99.

If open parentheses straight x plus 1 over straight x close parentheses squared space equals space 3, then open parentheses straight x cubed space plus space 1 over straight x cubed close parentheses is equal to

  • 3

  • 2

  • 1

  • 1

153 Views

100.

If straight x plus 1 over straight x space equals space 2, then the value of straight x to the power of 100 space plus space 1 over straight x to the power of 100 is

  • 2

  • 0

  • 1

  • 1

129 Views

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