Recent questions in Engineering Mathematics

3 votes
1 answer
8901
Let $A =\begin{bmatrix} P & Q\\ R & Q\ \end{bmatrix}$. If $P,Q,R$ and $S$ are symmetric , What can you say about $A$?
12 votes
4 answers
8902
The limit $$\lim_{x \to 0} \frac{d}{dx}\,\frac{\sin^2 x}{x}$$ is$0$$2$$1$$\frac{1}{2}$None of the above
10 votes
3 answers
8904
1 votes
0 answers
8905
Find Maximum and Minimum no of edges in a graph G with n vertices if G has 3 component with 2 non acyclic and 1 acyclic component?
21 votes
3 answers
8906
Let $m$, $n$ denote two integers from the set $\{1, 2,\dots,10\}$. The number of ordered pairs $\left ( m, n \right )$ such that $2^{m}+2^{n}$ is divisible by $5$ is.$10$...
14 votes
1 answer
8908
Let $X$ and $Y$ be two independent and identically distributed random variables. Then $P\left ( X Y \right )$ is.$\frac{1}{2}$10$\frac{1}{3}$Information is insufficient.
19 votes
4 answers
8909
Assume that you are flipping a fair coin, i.e. probability of heads or tails is equal. Then the expected number of coin flips required to obtain two consecutive heads for...
10 votes
2 answers
8910
Consider the problem of maximizing $x^{2}-2x+5$ such that $0< x< 2$. The value of $x$ at which the maximum is achieved is:$0.5$$1$$1.5$$1.75$None of the above
14 votes
4 answers
8911
The probability of three consecutive heads in four tosses of a fair coin is$\left(\dfrac{1}{4}\right)$$\left(\dfrac{1}{8}\right)$$\left(\dfrac{1}{16}\right)$$\left(\dfrac...
13 votes
2 answers
8913
In how many ways can the letters of the word $\text{ABACUS}$ be rearranged such that the vowels always appear together?$\dfrac{(6+3)!}{2!}$ $\dfrac{6!}{2!}$ $\dfrac{3!3!}...
7 votes
1 answer
8914
The equations.$x_{1}+2x_{2}+3x_{3}=1$$x_{1}+4x_{2}+9x_{3}=1$$x_{1}+8x_{2}+27x_{3}=1$haveOnly one solutionTwo solutionsInfinitely many solutionsNo solutions
2 votes
1 answer
8915
Define $\left \{ x_{n} \right \}$ as $x_{1}=0.1,x_{2}=0.101,x_{3}=0.101001,\dots$ Then the sequence $\left \{ x_{n} \right \}$.Converges to a rational numberConverges to ...
1 votes
0 answers
8916
https://gateoverflow.in/?qa=blob&qa_blobid=11477564903327944491
1 votes
2 answers
8917
a fair coin is tossed 10 times ,wt is the probability that head will come up in first two toss of coin??
3 votes
1 answer
8919
Let $x$ and $y \in \mathbb{R}^{n}$ be non-zero column vectors, from the matrix $A=xy^{T}$, where $y^{T}$ is the transpose of $y$. Then the rank of $A$ is:$2$$0$At least $...
1 votes
0 answers
8920