Recent questions tagged quantitative-aptitude

0 votes
4 answers
2
How many $4$-digit positive integers divisible by $3$ can be formed using only the digits $\{1,3,4,6,7\}$, such that no digit appears more than once in a number?$24$$48$$...
3 votes
3 answers
3
​​​​​​The sum of the following infinite series is\[2+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{8}+\frac{1}{9}+\frac{1}{16}+\frac{1}{27}+\cdots\]$11 / 3$$7 ...
0 votes
4 answers
5
The probability of a boy or a girl being born is $1 / 2$. For a family having only three children, what is the probability of having two girls and one boy?$3 / 8$$1 / 8$$...
6 votes
5 answers
9
For positive non-zero real variables $x$ and $y$, if\[\ln \left(\frac{x+y}{2}\right)=\frac{1}{2}[\ln (x)+\ln (y)]\]then, the value of $\frac{x}{y}+\frac{y}{x}$ is$1$$1 / ...
2 votes
1 answer
12
4 votes
1 answer
13
Consider the following sample of numbers:$9,18,11,14,15,17,10,69,11,13$The median of the sample is$13.5$$14$$11$$18.7$
3 votes
3 answers
14
2 votes
2 answers
15
For positive non-zero real variables $p$ and $q$, if$\log \left(p^2+q^2\right)=\log p+\log q+2 \log 3,$then, the value of $\frac{p^4+q^4}{p^2 q^2}$ is$79$$81$$9$$83$
1 votes
1 answer
21