NCERT Solutions for Class 10 Maths Chapter 12 Exercise 12.2

CBSE X Related Questions

  • 1.
    If roots of the quadratic equation \(x^2 - k\sqrt{3}x + 2 = 0\) are real and equal, then value of k is

      • \(-2\)
      • \(\sqrt{\frac{8}{3}}\)
      • \(1\)
      • \(2\)

    • 2.
      Mean and Median of a frequency distribution are 43 and 40 respectively. The value of mode is

        • 34
        • 43
        • 38.5
        • 41.5

      • 3.
        There are two sections A and B of Grade X. There are 28 students in Section A and 30 students in Section B. What is the minimum number of books you will acquire for the class library so that they can be distributed equally among students of Section A or Section B ?

          • 144
          • 2
          • 420
          • 272

        • 4.
          It is given that \(\triangle ABC \sim \triangle EDF\). Which of the following is not true?

            • \(\frac{\text{Perimeter of } \triangle ABC}{\text{Perimeter of } \triangle EDF} = \frac{AB}{ED}\)
            • \(\frac{AB}{ED} = \frac{AC}{EF}\)
            • \(\angle A = \angle D, \angle C = \angle F\)
            • \(\frac{AB + BC}{AC} = \frac{ED + DF}{EF}\)

          • 5.
            If for a data, median is 5 and mode is 4, then mean is equal to :

              • 7
              • 11
              • \(\frac{11}{2}\)
              • \(\frac{14}{3}\)

            • 6.
              For an acute angle \(\theta\), if \(\sin \theta = \frac{1}{9}\), then value of \(\frac{9 \csc \theta + 1}{9 \csc \theta - 1}\) is

                • \(0\)
                • \(\frac{80}{81}\)
                • \(1\)
                • \(\frac{82}{80}\)

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