CUET · MATHS · PYQ PAPER 2023
Let \(\left|\begin{array}{cc}3 x & -7 \\ 1 & 4\end{array}\right|=\left|\begin{array}{ll}3 & 2 \\ 4 & x\end{array}\right|\), then value of \(x\) is :
- A \(\frac{-5}{3}\)
- B 1
- C \(-1\)
- D \(\frac{2}{7}\)
Answer & Solution
Correct Answer
(A) \(\frac{-5}{3}\)
Step-by-step Solution
Detailed explanation
\(12x + 7 = 3x - 8\) \(9x = -15\) \(x = -\frac{15}{9}\) \(x = \frac{-5}{3}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from MATHS
- consider the linear programming problem: Maximise \(z=3 x+y\) subject to the constraints \(x+y \leq 6, x \geq 0, y \geq 0\). Which of the following statements are true?
(A) \(x \geq 0, y \geq 0\) are non-negative restrictions.
(B) The point \((1,1)\) does not lie in the half plane \(x+y \leq 6\).
(C) There are 2 corner points of the feasible region of given LPP.
(D) Maximum value of \(z\) is 18.
Choose the correct answer from the options given below:CUET 2023 Hard - The angle between \(x\) axis and the vector \(\hat{i}+\hat{j}+\hat{k}\) is :CUET 2023 Medium
- Consider \(f: R ^{+} \rightarrow[4, \infty)\) given by \(f(x)=x^2+4\)
(where \(R ^{+}\)is set of non negative real numbers) then \(f^{-1}(x)\) is :CUET 2023 Easy - If three balls are drawn one by one without replacement from a bag containing 5 white and 4 red balls, then the probability distribution of the number of white balls drawn isCUET 2025 Easy
- \(A\) and \(B\) are two independent events. The probability that both events \(A\) and \(B\) occur is \(\frac{1}{6}\) and the probability that neither of them occur is \(\frac{1}{3}\). If \(P(A)=x, P(B)=y\) then the value of \(x+y\) is.CUET 2025 Hard
- The objective function of an LPP is \(z=a x+\beta y,(a, \beta>0)\) that has to be maximized/minimized subject to the constraints \(x+y \leq 2, x \geq 0, y \geq 0\).
Then \(\max (z)-\min (z)\) is equal to :CUET 2025 Medium
More PYQs from CUET
- Number of defective bulbs in a lot of 500 bulbs follows a binomial distribution with probability of a randomly selected bulb to be defective equal to 0.3.
A sample of 50 bulbs is drawn. Probability of 2 defective bulbs in the sample is:CUET 2023 Medium - Glycoside linkage is the ether bond present in between two:CUET 2023 Easy
- When resources are unlimited in a habitat, what type of growth is seen in the population?CUET 2025 Easy
- Match List I with List II
Choose the correct answer from the options given belowLIST - I LIST - II A. Mathematical expression for rate of reaction I. rate constant B. Rate of reaction for zero order reaction is equal to II. rate law C. Unit of rate constant for zero order reaction is same as that of III. order of slowest step D. Order of a complex reaction is determined by IV. rate of reaction CUET 2023 Hard - Match List-I (Name of the Base) with List-II (Structure)
List - I (Name of the Base) List - II (Structure) (A). Adenine (A) (I) 
(B). Cytosine (C) (II) 
(C). Thymine (T) (III) 
(D). Guanine (G) (IV) 
Choose the correct answer from the options given below:CUET 2025 Hard - Reaction of phenol with chloroform in the presence of sodium hydroxide gives salicylaldehyde. The reaction is known asCUET 2025 Medium