Search results for isi2017

10 votes
8 answers
1
Suppose the rank of the matrix$$\begin{pmatrix}1&1&2&2\\1&1&1&3\\a&b&b&1\end{pmatrix}$$is $2$ for some real numbers $a$ and $b$. Then $b$ equals$1$$3$$1/2$$1/3$
0 votes
2 answers
5
0 votes
1 answer
6
Write the number $(-5)^{\frac{1}{2}}$ in single precision IEEE 754 floating point form.
0 votes
1 answer
8
1 votes
3 answers
9
If $x,y,z$ are in $A.P.$ and $a>1$, then $a^x, a^y, a^z$ are in$A.P.$$G.P$$H.P$none of these
2 votes
2 answers
10
If $\begin{vmatrix} 10! & 11! & 12! \\ 11! & 12! & 13! \\ 12! & 13! & 14! \end{vmatrix} = k(10!)(11!)(12!)$, then the value of $k$ is$1$$2$$3$$4$
1 votes
1 answer
12
7 votes
4 answers
13
The value of the Boolean expression (with usual definitions) $(A’BC’)’ +(AB’C)’$ is$0$$1$$A$$BC$
1 votes
4 answers
15
The inequality $\mid x^2 -5x+4 \mid (x^2-5x+4)$ holds if and only if$1 < x < 4$$x \leq 1$ and $x \geq 4$$1 \leq x \leq 4$$x$ takes any value except $1$ and $4$
3 votes
2 answers
16
The value of $\dfrac{1}{\log_2 n}+ \dfrac{1}{\log_3 n}+\dfrac{1}{\log_4 n}+ \dots + \dfrac{1}{\log_{2017} n}\:\:($ where $n=2017!)$ is$1$$2$$2017$none of these
0 votes
3 answers
17
The graph of a cubic polynomial $f(x)$ is shown below. If $k$ is a constant such that $f(x)=k$ has three real solutions, which of the following could be a possible value ...
2 votes
2 answers
18
The solution of $\log_5(\sqrt{x+5}+\sqrt{x})=1$ is$2$$4$$5$none of these
0 votes
2 answers
20
The area of the shaded region in the following figure (all the arcs are circular) is$\pi$$2 \pi$$3 \pi$$\frac{9}{8} \pi$