Recent questions and answers in Numerical Ability - GATE CSE Doubts

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#edugorilla#Placement paper#wipro
How many odd numbers of four digits having distinct digits can be formed with the digits 0,1,2,3,5,7 ?

answered Jan 14 in Numerical Ability by kalin (153 points) | 12 views

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# edugorilla #IT placement papers # wipro
A team of 30 men is supposed to do a work in 37 days . After 25 days , 5 more men were employed and the work was finished 1 day earlier . How many days would it have been delayed if 5 more men were not employed?

answered Jan 12 in Numerical Ability by zxy123 (3k points) | 9 views

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Geometric Progression
Finding the sum of the following series leads to two different answers with two different methods. The series is listed as: 1+2/3 + 4/9 + 6/27 + . (infinity) Method 1: Directly apply the formula--> Sum=a/(1-r), with a=1 and r=2/3. Here, we get ... ...(infinity) . ..(2) Subtracting (1) from (2) and solving further, we will get S=2.5 Kindly tell which method is correct.

asked Jan 10 in Numerical Ability by sarkar (5 points) | 25 views

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GATE 2013 GENERAL APTITUDE,NO:-13( XL PAPER)
This Question is from GATE 2013 General aptitude Paper, If |-2x+9|=3 then the possible value of |-X|-X^2 would be: a)30 (b)-30 (c)-42 (d) 42

answered Oct 9, 2020 in Numerical Ability by Nikhil_dhama (151 points) | 24 views

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Aptitude book, gateforum #general aptitude #divisibility

answered Aug 23, 2020 in Numerical Ability by mandeepC (1k points) | 40 views

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GATE2013 CE: GA-7 Video Solution
If $\mid 4X-7 \mid =5$ then the values of $2\mid X\mid -\mid -X\mid$ is: $\quad 2,\left(\dfrac{1}{3}\right)$ $\left(\dfrac{1}{2}\right),3$ $\left(\dfrac{3}{2}\right),9$ $\left(\dfrac{2}{3}\right),9$

answered Aug 20, 2020 in Numerical Ability by akshita_jain (17 points) | 26 views

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GATE2014-1-GA-8 Video Solution
Round-trip tickets to a tourist destination are eligible for a discount of $10\%$ on the total fare. In addition, groups of $4$ or more get a discount of $5\%$ on the total fare. If the one way single person fare is $Rs$ $100$, a group of $5$ tourists purchasing round-trip tickets will be charged $Rs$ __________

answered Aug 20, 2020 in Numerical Ability by akshita_jain (17 points) | 40 views

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Set and venn diagram

answered Aug 20, 2020 in Numerical Ability by akshita_jain (17 points) | 47 views

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NIELIT-2018 December
Look at this series : 25, 25, 37, 37, __, 51 , What number should fill the blank? (A) 51 (B) 39 (C) 23 (D) 25

answered Aug 16, 2020 in Numerical Ability by Arkaprava (723 points) | 1.1k views

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#apti previous tcs apti
Hare in the other. The hare starts after the tortoise has covered 1/5 of its distance and that too leisurely3. A hare and a tortoise have a race along a circle of 100 yards diameter. The tortoise goes in one direction and the. The hare and tortoise meet when the hare has ... . By what factor should the hare increase its speed so as to tie the race? A. 37.8 B. 8 C. 40 D. 5

answered Aug 16, 2020 in Numerical Ability by Arkaprava (723 points) | 39 views

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GATEBOOK MOCK TEST 1 Q59
In an NGO study on the effect of sleep on call center workers, following were the observations made on a certain number of volunteers in the study. 75% of the volunteers receive fewer than 6 hours of sleep and report feeling tired during ... volunteers receive fewer than 6 hours of sleep, what percent of the volunteers report no feelings of tiredness during their shifts ?

answered Aug 16, 2020 in Numerical Ability by Arkaprava (723 points) | 39 views

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Aptitude:ACE Test
The minimum number of cables required to connect $8$ computers to $4$ printers to ensure that any $4$ computers can directly access $4$ different printers is __________ Ans given $20,$ I havenot got, how it could be?

answered Aug 16, 2020 in Numerical Ability by Arkaprava (723 points) | 22 views

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self doubt: to find HCF
$\gcd(36,k)=6$, then what is the k? I know the only naive method,can anyone explain any other method.

answered Aug 16, 2020 in Numerical Ability by Arkaprava (723 points) | 66 views

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SNAP-2018: Numerical Ability
A fast train leaves Chennai to Bengaluru and at the same point in time a slow train leaves from Bengaluru to Chennai. The fast train moves at a speed of $60\: km /hr$ and the slow train moves at half of the speed of the fast ... is further from Chennai The slow train is further from Chennai Both the trains are equidistant from Chennai None of the options is correct

answered Aug 15, 2020 in Numerical Ability by Arkaprava (723 points) | 40 views

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Made easy workbook clocks
A clock is set right at 7 AM,and the clock loses 15 min in 24 hrs.what is the correct time when it shows 4PM.after 2 days?

answered Aug 14, 2020 in Numerical Ability by Akanksha Agrawal (309 points) | 11.9k views

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Let G be abelian group of order 125 then number of elements in z G is

answered Aug 12, 2020 in Numerical Ability by Arkaprava (723 points) | 106 views

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#Self_doubt(aptitude)
A,B,C invests their shares are in the ratio 1/2:1/3:1/4. A withdraws half of his capital after 10 months. A profit of 378 is divided among them what is B's share?? While solving this problem how to convert fractional ratios into normal ratio??

answered Aug 11, 2020 in Numerical Ability by Arkaprava (723 points) | 54 views

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General Aptitude Self doubt
Consider a Circle with 100 points numbered 1,2,3,4, ..,99,100. Now their is a tortoise at point numbered 1 and a hare at point numbered 2 and both can only move in clockwise direction only on numbered points. Tortoise can move one point at time for ... until they meet at some point. Now find the point at which they meet or if they cannot meet at some point tell why??

answered Jul 3, 2020 in Numerical Ability by Shaik Masthan (1.5k points) | 39 views

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Self Doubt - A $200 \times 200$ $cm^2$ area is to be scanned by a $20 \times 20$ $cm^2$ flashlight.

asked May 7, 2020 in Numerical Ability by toxicdesire (555 points) | 22 views

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TOMATO + Polynomials Q286

answered Apr 24, 2020 in Numerical Ability by Sourajit25 (5 points) | 22 views

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Self Doubt #Clocks-and-calendars
On a particular day if it is found that a clock is shoing 10 minutes less at 1:00 pm and 5 min more at 6:00 pm on the same day. At what time did the clock show the correct time? 3 hr 20 min 4 hr 20 min 5 hr 40 min 6 hr 40 min

answered Apr 23, 2020 in Numerical Ability by Animesh Sinha (25 points) | 44 views

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GATE2010-65 Video Solution
Given digits$ 2, 2, 3, 3, 3, 4, 4, 4, 4$ how many distinct $4$ digit numbers greater than $3000$ can be formed? $50$ $51$ $52$ $54$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 9 views

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GATE2016-1-GA10 Video Solution
In a process, the number of cycles to failure decreases exponentially with an increase in load. At a load of $80$ units, it takes $100$ cycles for failure. When the load is halved, it takes $10000 \ \text{cycles}$ for failure.The load for which the failure will happen in $5000 \ \text{cycles}$ is _____________. $40.00$ $46.02$ $60.01$ $92.02$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 5 views

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GATE2012 CY: GA-7 Video Solution
$A$ and $B$ are friends. They decide to meet between 1:00 pm and 2:00 pm on a given day. There is a condition that whoever arrives first will not wait for the other for more than $15$ minutes. The probability that they will meet on that day is $1/4$ $1/16$ $7/16$ $9/16$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 6 views

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GATE2015-1-GA-10 Video Solution
The probabilities that a student passes in mathematics, physics and chemistry are $m,p$ and $c$ respectively. Of these subjects, the student has $75\%$ chance of passing in at least one, a $50\%$ chance of passing in at least two and a $40\%$ ... Only relation I is true. Only relation II is true. Relations II and III are true. Relations I and III are true.

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 6 views

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GATE2017-2-GA-9 Video Solution
The number of roots of $e^{x}+0.5x^{2}-2=0$ in the range $[-5,5]$ is $0$ $1$ $2$ $3$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 10 views

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GATE2018-GA-10 Video Solution
A six sided unbiased die with four green faces and two red faces is rolled seven times. Which of the following combinations is the most likely outcome of the experiment? Three green faces and four red faces. Four green faces and three red faces. Five green faces and two red faces. Six green faces and one red face

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 7 views

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GATE2015-2-GA-7 Video Solution
Four branches of a company are located at $M$, $N$, $O$ and $P$. $M$ is north of $N$ at a distance of $4 km$; $P$ is south of $O$ at a distance of $2$ $km$; $N$ is southeast of O by $1 km$. What is the distance between $M$ and $P$ in $km$? $5.34$ $6.74$ $28.5$ $45.49$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 6 views

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GATE2016-1-GA05 Video Solution
A cube is built using $64$ cubic blocks of side one unit. After it is built, one cubic block is removed from every corner of the cube. The resulting surface area of the body (in square units) after the removal is ________. $56$ $64$ $72$ $96$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 9 views

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GATE2015-2-GA-8 Video Solution
In a triangle $PQR, PS$ is the angle bisector of $\angle QPR \text{ and } \angle QPS =60^\circ$. What is the length of $PS$ ? $\left(\dfrac{(q+r)} {qr}\right)$ $\left(\dfrac {qr} {q+r}\right)$ $\large \sqrt {(q^2 + r^2)}$ $\left(\dfrac{(q+r)^2} {qr}\right)$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 7 views

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GATE2017-2-GA-8 Video Solution
$X$ is a $30$ digit number starting with the digit $4$ followed by the digit $7$. Then the number $X^3$ will have $90$ digits $91$ digits $92$ digits $93$ digits

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 18 views

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GATE2017-1-GA-9 Video Solution
Arun, Gulab, Neel and Shweta must choose one shirt each from a pile of four shirts coloured red, pink, blue and white respectively. Arun dislikes the colour red and Shweta dislikes the colour white. Gulab and Neel like all the colours. In how many different ways can they choose the shirts so that no one has a shirt with a colour he or she dislikes? $21$ $18$ $16$ $14$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 13 views

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GATE2017-2-GA-5 Video Solution
There are $3$ red socks, $4$ green socks and $3$ blue socks.You choose $2$ socks. The probability that they are of the same colour is $\dfrac{1}{5}$ $\dfrac{7}{30}$ $\dfrac{1}{4}$ $\dfrac{4}{15}$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 6 views

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GATE2018-GA-9 Video Solution
In the figure below, $\angle DEC + \angle BFC$ is equal to _____ $\angle BCD - \angle BAD$ $\angle BAD + \angle BCF$ $\angle BAD + \angle BCD$ $\angle CBA + \angle ADC$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 4 views

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GATE2019-GA-7 Video Solution
In the given diagram, teachers are represented in the triangle, researchers in the circle and administrators in the rectangle. Out of the total number of the people, the percentage of administrators shall be in the range of _______ $0$ to $15$ $16$ to $30$ $31$ to $45$ $46$ to $60$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 8 views

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GATE2010-62 Video Solution
Hari(H), Gita(G), Irfan(I) and Saira(S) are siblings (i.e., brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than three years. Given the following facts: ... is not the youngest. There are no twins. In what order they were born (oldest first)? $HSIG$ $SGHI$ $IGSH$ $IHSG$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 8 views

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GATE2017-2-GA-7 Video Solution
There are three boxes. One contains apples, another contains oranges and the last one contains both apples and oranges. All three are known to be incorrectly labeled. If you are permitted to open just one box and then pull out and inspect only ... three boxes? The box labeled Apples' The box labeled Apples and Oranges' The box labeled Oranges' Cannot be determined

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 3 views

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GATE2016-2-GA-09 Video Solution
In a $2 \times 4$ rectangle grid shown below, each cell is rectangle. How many rectangles can be observed in the grid? $\begin{array}{|c|c|c|c|c|}\hline{\;\;\;}&{\;\;\;}&{\;\;\;}&{\;\;\;}\\\hline{}&{}&{}&\\\hline\end{array}$ $21$ $27$ $30$ $36$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 5 views

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GATE2019-GA-9 Video Solution
In a college, there are three student clubs, $60$ students are only in the Drama club, $80$ students are only in the Dance club, $30$ students are only in Maths club, $40$ students are in both Drama and Dance clubs, $12$ students are in both Dance and ... are not in any of these clubs, then the total number of students in the college is _____. $1000$ $975$ $900$ $225$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 8 views

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GATE2017-1-GA-10 Video Solution
A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at $25$ m intervals in this plot. If in a flood, the water level rises to $525$ m, which of the villages $P, Q, R, S, T$ get submerged? $P, Q$ $P, Q, T$ $R, S, T$ $Q, R, S$

asked Apr 18, 2020 in Numerical Ability by admin (573 points) | 11 views

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