Top 20 Questions of Math (Class 12th 1st)

Most Repeated Questions

Top 20 Questions of Math

Previous year question paper with solutions for Top repeated questions of Math

PSEB • Class 12th • 1st

Browse Top 20 questions of Math (Class 12th 1st) previous year question papers for Top repeated questions of Math. This page helps Math students find semester-wise papers for revision, exam practice, and understanding previous exam patterns. These are the top twenty repeated questions identified from previous year papers for Math (Class 12th 1st), helping students focus on the most frequently asked topics.

Top repeated questions

Top 20
  1. 1.

    Find the angle between plane 3x + 4y - z = 8 and line \\\\({x-1\\\\over 2}\\\\) = \\\\({2-y\\\\over 7}\\\\) = \\\\({3z + 6\\\\over 12}\\\\)

    Appeared 3 times

    Appeared in: Mar 2018, Mar 2017

  2. 2.

    Express \\\\(\\\\begin{bmatrix} 6 & -4 & 5 \\\\\\\\[0.3em] 1 & 4 & -2\\\\\\\\[0.3em] 7 & 5 & 9 \\\\end{bmatrix}\\\\)as sum of symmetric matrix and a skew-symmetric matrix, 

    Appeared 2 times

    Appeared in: Mar 2018, Mar 2017

  3. 3.

    Solve the following sysJeur oflinear equations by matrix method :\\r\\n\\r\\n3 x+y +z=10, 2x-y-z=0, x-y + 2z = 1\\r\\n\\r\\nor\\r\\n\\r\\nUsing elementary transformation find the inverse of \\\\(\\\\begin{bmatrix} 3 & 2 & 1 \\\\\\\\[0.3em] 2 & 4 & 3 \\\\\\\\[0.3em] 2 & -1 & 2 \\\\end{bmatrix}\\\\) 

    Appeared 2 times

    Appeared in: Mar 2018, Mar 2017

  4. 4.

    (i) If is a binary operation such that a * b = a2 +b2 then 3 * 5 is  \\r\\n    (a) 34           (b) 9             (c) 8              (d) 25 

    Appeared 2 times

    Appeared in: Mar 2018

  5. 5.

    If cos-1  x = y  then \\r\\n \\r\\n(a) −𝜋/2

    Appeared 2 times

    Appeared in: Mar 2018

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