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CTET Solved Paper - UTET September 2013 Paper2

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71. The number of diagonals in a regular hexagon will be

  • Option : C
  • Explanation : (C)

    The total number of diagonal will be 9.

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72. The value of (256)0.16 x (16)0.18 is

  • Option : B
  • Explanation : (B) (256)0.16 x(16)0.18
           = (28 )0.16 x(24 )0.18
           =21·28 X 20.72 = 22 = 4
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73. An amount becomes Rs.2400 in 3 yr and Rs.2520 in 4 yr. The rate of annual compound interest is 10%

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74. The height of a room is x and the area of two adjacent walls of room are y and z respectively. The area of the roof of room will be

  • Option : A
  • Explanation : (A) Given height of a room be x,
    Let length of room be l and breadth be b, respectively, then,
    bh = y and lh = z
    ⇒ bx = y and lx = z
    ∴ b = y/x and l = z/x
    So, area of roof = l = b = (z/x) × y/x
    = yz/x2
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75. In following the correct order is

  • Option : A
  • Explanation : Correct order is obtuse angle < straight angle < reflex angle
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UTET September 2013 Paper2