consectetur

 4 mark

| --1.0 mark |

 60 minutes

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Question 1:

त्रिभुज का क्षेत्रफल क्या है?

Question 2:

If \( A^{2}+B^{2}+C^{2}=0 \), then what is the value of the following? \[ \left|\begin{array}{ccc}1 & \cos C & \cos B \\ \cos C & 1 & \cos A \\ \cos B & \cos A & 1\end{array}\right| \]

Question 3:

If
\[
\left|\begin{array}{ccc}
2 & 3+i & -1 \\
3-i & 0 & i-1 \\
-1 & -1-i & 1
\end{array}\right|=A+iB
\]
where \(i=\sqrt{-1}\), then what is \(A+B\) equal to?

Question 4:

What is \( \left(\frac{\sqrt{3}+i}{\sqrt{3}-i}\right)^{3} \) equal to?

Question 5:

If \( x^{2}-x+1=0 \), then what is \( \left(x-\frac{1}{x}\right)^{2} + \left(x-\frac{1}{x}\right)^{4} + \left(x-\frac{1}{x}\right)^{8} \) equal to?

Question 6:

If \(\Delta=\left|\begin{array}{lll}a & b & c \\\ d & e & f \\\ g & h & i\end{array}\right|\) and \(A, B, C, D, G\) are the cofactors of the elements \(a, b, c, d, g\) respectively, then what is \(bB + cC - dD - gG\) equal to?

Question 7:

Consider the following statements in respect of the determinant \(\Delta=\left|\begin{array}{ccc}k(k+2) & 2k+1 & 1\\2k+1 & k+2 & 1\\3 & 3 & 1\end{array}\right|\)
I. \(\Delta\) is positive if \(k>0\).
II. \(\Delta\) is negative if \(k<0\).
III. \(\Delta\) is zero if \(k=0\).
How many of the statements given above are correct?

Question 8:

If \( \omega \) is a non-real cube root of unity, then what is a root of the following equation?
\[
\left|\begin{array}{ccc}
x+1 & \omega & \omega^{2} \\
\omega & x+\omega^{2} & 1 \\
\omega^{2} & 1 & x+\omega<\br>\end{array}\right|=0
\]

Question 9:

If \( x+\frac{5}{y}=4 \) and \( y+\frac{5}{x}=-4 \), then what is \( (x+y) \) equal to?

Question 10:

The sum of the first 8 terms of a GP is five times the sum of its first 4 terms. If \( r \neq 1 \) is the common ratio, then what is the number of possible real values of \( r \) ?

Question 11:

If one root of the equation \( x^{2}-k x+k=0 \) exceeds the other by \( 2 \sqrt{3} \), then which one of the following is a value of \( k \) ?

Question 12:

If \( p, 1, q \) are in AP and \( p, 2, q \) are in GP, then which of the following statements is/are correct?
I. \( p, 4, q \) are in HP.
II. \( (1 / p), 1 / 4,(1 / q) \) are in AP.

Question 13:

If \( x=(1111)_{2}, y=(1001)_{2} \) and \( z=(110)_{2} \), then what is \( x^{3}-y^{3}-z^{3}-3 x y z \) equal to?

Question 14:

The sum of the first \( k \) terms of a series \( S \) is \( 3 k^{2}+5 k \). Which one of the following is correct?

Question 15:

If 5th, 7th and 13th terms of an AP are in GP, then what is the ratio of its first term to its common difference?

Question 16:

Which of the following does not wet the walls of the glass vessel in which it is kept?

Question 17:

यदि \(A=\left[\begin{array}{lll}1 & 2 & 2 \\ 2 & 1 & 2 \\ 2 & 2 & 1\end{array}\right]\) तो \(A^{2}-4A\) किसके बराबर है?

Question 18:

एक व्युत्क्रमणीय आव्यूह \( M \) के संदर्भ में, निम्नलिखित पर विचार कीजिए :
I. \( |M^{2}|=|M|^{2} \)
II. \( |M|=|M^{-1}| \)
III. \( |M|=|M^{T}| \)

उपर्युक्त में से कितना/कितने सही है/हैं?

Question 19:

यदि \(5n\) भिन्न वस्तुओं में से \(r\) वस्तुओं के चयनों की संख्या, \((n+r)\) वस्तुओं के चयनों की संख्या के बराबर है, तो \(r\) का मान क्या है?

Question 20:

If the sum of binomial coefficients in the expansion of \( (x+y)^{n} \) is 256, then the greatest binomial coefficient occurs in which one of the following terms?

Question 21:

6 भिन्न वस्तुओं में से अधिक-से-अधिक 3 वस्तुओं के चयनों की संख्या क्या है?

Question 22:

यदि \( z \neq 0 \) एक सम्मिश्र संख्या है, तो \( \operatorname{amp}(z)+\operatorname{amp}(\bar{z}) \) किसके बराबर है?

Question 23:

यदि \( k<(sqrt{2}+1)^{3}

Question 24:

यदि \( (x+y)^{n} \) के प्रसार में द्विपद गुणांकों का योगफल 256 है, तो निम्नलिखित पदों में से किसमें महत्तम द्विपद गुणांक आएगा?

Question 25:

If \( A^{2}+B^{2}+C^{2}=0 \), then what is the value of the following?
\[
\left|\begin{array}{ccc}
1 & \cos C & \cos B \\
\cos C & 1 & \cos A \\
\cos B & \cos A & 1
\end{array}\right|\]

Question 26:

If \(\Delta=\left|\begin{array}{lll}a & b & c \\ d & e & f \\ g & h & i\end{array}\right|\) and \(A, B, C, D, G\) are the cofactors of the elements \(a, b, c, d, g\) respectively, then what is \(b B + c C - d D - g G\) equal to?

Question 27:

How many 7-letter words (with or without meaning) can be constructed using all the letters of the word CAPITAL so that all consonants come together in each word?

Question 28:

What is the number of rational terms in the expansion of \( \left(3^{\frac{1}{2}}+5^{\frac{1}{4}}\right)^{12} \) ?

Question 29:

The sum of the first \( k \) terms of a sequence \( S \) is \( 3 k^{2} + 5 k \). Which of the following is correct?

Question 30:

The sum of the first 8 terms of a GP is five times the sum of its first 4 terms. If \( r \neq 1 \) is the common ratio, then what is the number of possible real values of \( r \)?

Question 31:

If \(p,1,q\) are in AP and \(p,2,q\) are in GP, then which of the following statements is/are correct?
I. \(p,4,q\) are in HP.
II. \((1/p),1/4,(1/q)\) are in AP.

Question 32:

The sum of the first \( k \) terms of a series \( S \) is \( 3 k^{2}+5 k \). Which one of the following is correct?

Question 33:

If \( x=(1111)_{2}, y=(1001)_{2} \) and \( z=(110)_{2} \), then what is \( x^{3}-y^{3}-z^{3}-3 x y z \) equal to?

Question 34:

If 5th, 7th and 13th terms of an AP are in GP, then what is the ratio of its first term to its common difference?

Question 35:

एक श्रेणी \( S \) के पहले \( k \) पदों का योगफल \( 3 k^{2}+5 k \) है। निम्नलिखित में से कौन-सा सही है?

Question 36:

What is the area of the triangle?

Question 37:

Consider the following statements :
I. The triangle is obtuse-angled triangle.
II. The sum of acute angles of the triangle is also acute.

Which of the statements given above is/are correct?

Question 38:

What is the area of the triangle?

Question 39:

What is ∠B equal to?

Question 40:

What is \( (p+q+r) \) equal to?

Question 41:

Consider the following for the next three (03) questions:

The sides of a triangle \(ABC\) are \(AB=3\mathrm{~cm},\,BC=5\mathrm{~cm}\), and \(CA=7\mathrm{~cm}\).
What is the maximum value of \(p\)?

Question 42:

What is \( \left(p^{2}+q^{2}+r^{2}\right) \) equal to?

Question 43:

What is \( (p q + q r + r p) \) equal to?

Question 44:

If \( z = \frac{\text{a} + i\text{b}}{\text{c} - i\text{d}} \) and \( |z| = 1 \), what is the value of \( z^3 \)?

Question 45:

If \( z = \frac{\text{a} + i\text{b}}{\text{c} - i\text{d}} \), what is the value of \( z \times \bar{z} \)?

Question 46:

If a complex number is \( z = \frac{a + ib}{c - id} \), how can \( z^3 \) be expressed?

Question 47:

If \( x^{2}-x+1=0 \), then what is the value of \(\left(x-\frac{1}{x}\right)^{2}+\left(x-\frac{1}{x}\right)^{4}+\left(x-\frac{1}{x}\right)^{8}\)?

Question 48:

If \( A^{2}+B^{2}+C^{2}=0 \), then
\[
\begin{vmatrix}
1 & \cos C & \cos B \\
\cos C & 1 & \cos A \\
\cos B & \cos A & 1
\end{vmatrix}
\]
what is the value of?

Question 49:

What is \( \left(\frac{\sqrt{3}+i}{\sqrt{3}-i}\right)^{3} \) equal to?

Question 50:

If \( \left|\begin{array}{ccc}2 & 3+i & -1 \\ 3-i & 0 & i-1 \\ -1 & -1-i & 1 \end{array}\right| = A + iB \) where \( i=\sqrt{-1} \), then what is the value of \( A+B \)?