Recent activity in Quantitative Aptitude

7 7 votes
3 3 answers
​​​​​Three distinct sets of indistinguishable twins are to be seated at a circular table that has $8$ identical chairs. Unique seating arrangements are defined by the rel...
6 6 votes
2 answers 2 answers
The total expenditure of a family, on different activities in a month, is shown in the pie-chart. The extra money spent on education as compared to transport (in percent)...
7 7 votes
3 answers 3 answers
The monthly distribution of $9$ Watt LED bulbs sold by two firms $X$ and $Y$ from January to June $2018$ is shown in the pie-chart and the corresponding table. If the tot...
11 11 votes
2 answers 2 answers
In a sports academy of $300$ peoples, $105$ play only cricket, $70$ play only hockey, $50$ play only football, $25$ play both cricket and hockey, $15$ play both hockey an...
2 2 votes
2 answers 2 answers
Which of the following function(s) is an accurate description of the graph for the range(s) indicated?$y=2x+4 \text{ for } -3 \leq x \leq -1$$y= \mid x-1 \mid \text{ for ...
7 7 votes
3 answers 3 answers
Two finance companies, $P$ and $Q$, declared fixed annual rates of interest on the amounts invested with them. The rates of interest offered by these companies may differ...
0 0 votes
1 1 answer
The table lists the unit selling price of five products $\mathrm{P}, \mathrm{Q}, \mathrm{R}, \mathrm{S}$, and $\text{T}$. On a particular day, $250$ items were sold with ...
2 2 votes
1 answers 1 answer
In manufacturing industries, loss is usually taken to be proportional to the square of the deviation from a target. If the loss is Rs. $4900$ for a deviation of $7$ units...
7 7 votes
3 answers 3 answers
$(x\% \text{ of }y)$ + $(y\% \text{ of }x)$ is equivalent to ______ .$2\% \text{ of } xy$$2\% \text{ of } (xy/100)$$xy\% \text{ of } 100$$100\% \text{ of } xy$
8 8 votes
3 answers 3 answers
A fruit seller sold a basket of fruits at $\text{12.5%}$ loss. Had he sold it for Rs. $108$ more, he would have made a $\text{10%}$ gain. What is the loss in Rupees incur...
10 10 votes
4 answers 4 answers
Read the following table giving sales data of five types of batteries for years $2006$ to $2012$:$$\begin{array}{|l|l|l|l|l|l|} \hline \text{Year} & \text{Type I} & \tex...
6 6 votes
1 answers 1 answer
The price of a wire made of a super alloy material is proportional to the square of its length. The price of $10 m$ length of the wire is Rs. $1600$. What would be the to...
8 8 votes
1 answers 1 answer
The temperature $T$ in a room varies as a function of the outside temperature $T_0$ and the number of persons in the room $p$, according to the relation $T=K(\theta p +T_...
15 15 votes
2 answers 2 answers
Population of state $X$ increased by $x\%$ and the population of state $Y$ increased by $y\%$ from $2001$ to $2011$. Assume that $x$ is greater than $y$. Let $P$ be the ...
6 6 votes
1 answers 1 answer
The annual average rainfall in a tropical city is $1000$ mm. On a particular rainy day ($24$-hour period), the cumulative rainfall experienced by the city is shown in the...
21 21 votes
1 answers 1 answer
$\underbrace{a+a+a+ \dots +a}_{\text{n times}}=a^2b$ and $\underbrace{b+b+b+ \dots +b}_{\text{m times}} = ab^2$, where $a, b, n, m$ are natural numbers. What is the value...
12 12 votes
2 answers 2 answers
The points in the graph below represent the halts of a lift for a durations of $1$ minute, over a period of $1$ hour.Which of the following statements are correct?The ele...
6 6 votes
2 answers 2 answers
On a horizontal ground, the base of a straight ladder is $6$ m away from the base of a vertical pole. The ladder makes an angle of $45^{\circ}$ to the horizontal. If the ...
4 4 votes
1 answers 1 answer
A square has side $5$ cm smaller than the sides of a second square. The area of the larger square is four times the area of the smaller square. The side of the larger squ...
15 15 votes
2 answers 2 answers
The bar graph below shows the output of five carpenters over one month, each of whom made different items of furniture: chairs, tables, and beds.Consider the following st...
9 9 votes
1 answers 1 answer
The following sequence of numbers is arranged in increasing order: $1,x,x,x,y,y,9,16,18$. Given that the mean and median are equal, and are also equal to twice the mode, ...
7 7 votes
1 answers 1 answer
If the radius of a right circular cone is increased by $50\%$, its volume increases by$75\%$$100\%$$125\%$$237.5\%$
13 13 votes
2 answers 2 answers
A square pyramid has a base perimeter $x$, and the slant height is half of the perimeter. What is the lateral surface area of the pyramid?$x^{2}$$0.75 \: x^{2}$$0.50 \: x...
9 9 votes
2 answers 2 answers
Consider a sequence of numbers $a_1, a_2, a_3, \dots , a_n$ where $a_n = \dfrac{1}{n}-\dfrac{1}{n+2}$, for each integer $n>0$. Whart is the sum of the first $50$ terms?$\...
5 5 votes
2 answers 2 answers
Suresh wanted to lay a new carpet in his new mansion with an area of $70\times 55$ sq.mts. However an area of $550$ sq. mts. had to be left out for flower pots. If the co...
9 9 votes
2 answers 2 answers
Given that $\dfrac{\log P}{y-z} = \dfrac{\log Q}{z-x} = \dfrac{\log R}{x-y} = 10$ for $x \neq y \neq z$, what is the value of the product $PQR$?$0$$1$$xyz$$10^{xyz}$
12 12 votes
2 answers 2 answers
For non-negative integers, $a, b, c$, what would be the value of $a+b+c$ if $\log a + \log b + \log c = 0$?$3$$1$$0$$-1$
5 5 votes
3 answers 3 answers
A three-member committee has to be formed from a group of $9$ people. How many such distinct committees can be formed?$27$$72$$81$$84$
6 6 votes
1 answers 1 answer
Four cards are randomly selected from a pack of $52$ cards. If the first two cards are kings, what is the probability that the third card is a king?$\dfrac{4}{52} \\$$\df...
7 7 votes
1 answers 1 answer
There are $16$ teachers who can teach Thermodynamics (TD), $11$ who can teach Electrical Sciences (ES), and $5$ who can teach both TD and Engineering Mechanics (EM). The...
9 9 votes
2 answers 2 answers
How many four digit numbers can be formed with the $10$ digits $0,1,2,…,9$ if no number can start with $0$ and if repetitions are not allowed?
8 8 votes
2 answers 2 answers
Two dice are thrown simultaneously. The probability that the product of the numbers appearing on the top faces of the dice is a perfect square is$\dfrac{1}{9} \\$$\dfrac{...
10 10 votes
2 answers 2 answers
Two machines $M1$ and $M2$ are able to execute any of four jobs $P, Q, R$ and $S$. The machines can perform one job on one object at a time. Jobs $P, Q, R$ and $S$ take ...
10 10 votes
5 answers 5 answers
Tower A is $90$ m tall and tower B is $140$ m tall. They are 100 m apart. A horizontal skywalk connects the floors at $70$ m in both the towers. If a taut rope connects t...
8 8 votes
4 answers 4 answers
An oil tank can be filled by pipe $X$ in $5$ hours and pipe $Y$ in $4$ hours, each pump working on its own. When the oil tank is full and the drainage hole is open, the o...
4 4 votes
4 answers 4 answers
Budhan covers a distance of $19$ km in $2$ hours by cycling one fourth of the time and walking the rest. The next day he cycles (at the same speed as before) for half the...
10 10 votes
4 answers 4 answers
The last digit of $(2171)^{7}+(2172)^{9}+(2173)^{11}+(2174)^{13}$ is$2$$4$$6$$8$
13 13 votes
5 answers 5 answers
What is the value of $x$ when $81\times\left (\dfrac{16}{25} \right )^{x+2}\div\left (\dfrac{3}{5} \right )^{2x+4}=144?$$1$$-1$$-2$$\text{Can not be determined}$
27 27 votes
6 answers 6 answers
Hema's age is $5$ years more than twice Hari's age. Suresh's age is $13$ years less than Hari's age. If Suresh is $3$ times as old as Hema, then how old is Hema?$14$$17$$...
7 7 votes
7 answers 7 answers
The sum of the digits of a two digit number is $12$. If the new number formed by reversing the digits is greater than the original number by $54$, find the original numbe...
27 27 votes
7 answers 7 answers
Ananth takes $6$ hours and Bharath takes $4$ hours to read a book. Both started reading copies of the book at the same time. After how many hours is the number of pages t...
9 9 votes
9 9 answers
A student was supposed to multiply a positive real number $p$ with another positive real number $q$. Instead, the student divided $p$ by $q$. If the percentage error in t...
12 12 votes
14 answers 14 answers
Insert seven numbers between $2$ and $34$, such that the resulting sequence including $2$ and $34$ is an arithmetic progression. The sum of these inserted seven numbers...
6 6 votes
2 answers 2 answers
If $f(x) = x^2$ for each $x\in (-\infty,\infty)$, then $\large \dfrac{f\left(f\left(f(x)\right)\right)}{f(x)}$ is equal to _______.$f(x)$$(f(x))^2$$(f(x))^3$$(f(x))^4$
6 6 votes
2 answers 2 answers
The unit’s place in $26591749^{110016}$ is ______.$1$$3$$6$$9$
6 6 votes
2 answers 2 answers
A function, $\lambda$, is defined by$\lambda \left ( p,q \right )=\left\{\begin{matrix} \left ( p-q \right )^{2}, & \text{if} \:p\geq q, \\ p+q, &\text{if} \: p< q.\end{m...
5 5 votes
3 answers 3 answers
Four persons $\text{P, Q, R}$ and $\text{S}$ are to be seated in a row, all facing the same direction, but not necessarily in the same order. $\text{P}$ and $\text{R}$ ca...
10 10 votes
2 answers 2 answers
​​​​​​$\bigoplus$ and $\bigodot$ are two operators on numbers $\text{p}$ and $\text{q}$ such that $p \bigoplus q=\dfrac{p^{2}+q^{2}}{pq}$ and $p \bigodot q=\dfrac{p^{2}}{...
4 4 votes
2 answers 2 answers
In a company, $35\%$ of the employees drink coffee, $40\%$ of the employees drink tea and $10\%$ of the employees drink both tea and coffee. What $\%$ of employees drink ...
6 6 votes
2 answers 2 answers
In an equilateral triangle $\text{PQR}$, side $\text{PQ}$ is divided into four equal parts, side $\text{QR}$ is divided into six equal parts and side $\text{PR}$ is divid...
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