a man leaves office daily at 7pm. a driver comes to pick him from office and bring him home. One day, he gets free at 5.30pm and instead of waiting for the driver he decides to walk home. On the way he meets the driver and returns home in the car.he reaches home 20 min earlier than usual. Had he becomes free at 6, how much early would he have reached? π π
From the set of first 10 natural numbers, three distinct prime numbers a, b and c are selected to form a quadratic equation ax^2 + bx + c = 0, having real roots. Find the sum of the roots of all such possible quadratic equations that can be formed.
a) -19/2
b) 38
c) -27/5
d) -87/10
e) -149/10
1/a + 1/b + 1/c + 1/d + 1/e +1/f = 1, where a,b,c,d,e,f are all distinct positive integers. Find out the value of a,b,c,d,e,f.
Does anybody has good set of questions on VENN Diagrams
A circle is drawn with the centre at O and radius as OB, where OB is one of the sides of a parallelogram ABOD. The circle cuts AB and DO at the points N and M respectively. If the radius of the circle is 3 units, AN = 1 unit and NB = 4 units, then which of the following is correct?
1) area of ANMD is 3rt5/4
2) area of //gm ABOD is 5rt5
3) area of triangle BON is 3rt5
if x^2 + y^2 +z^2 =1. what is the range of xy+yz+zx?
a) [-1/2, 3]
b) [-1,2]
c) [-1/2, 1]
d) [-1,1/2]
e) [-1,1/2]
Approach?
ABCDEF is a regular hexagon with side length 4(3^(1/4).Points G,H,I,J,K,L are chosen uniformly at random, one from each side of the hexagon. What is the expected area of hexagon GHIJKL?
16.
If the equation 12x + 17y = k has exactly five non-negative integral solutions and k is a three-digit positive integer, then the number of possible values of k is
78
90
96
98
Two trains A and B started simultaneously towards each other (on parallel tracks) from P and Q with speeds of 90 km/hr and 108 km/hr respectively. At these speeds, they would cross each other at 2:30 p.m., but because of a signal problem arising at 1:00 p.m., the speeds of both the trains are reduced by the same quantity (in km/hr) and hence they crossed each other at 5:30 p.m. Find the reduced speed of train B.
40 km/hr
82 km/hr
76 km/hr
42 km/hr
β¬βΉIn the following figure, two circles are inscribed in a semi-circle with AB being the diameter and O being the center. Wherever any two out of the circles, semi-circle and diameter touch each other, they do so tangentially. Find the ratio of the areas of the two circles.
Share the approach
- (/2-1)^2:1
- 2(/2-1)^2:1
- (/2-1)^2:2
- 2(/2+1)^2:1
0 voters
If y= 66/x +x, what is the maximum possible integer value of y such that x -13
-14
-16
-17
Is it a good option to go for MBA in IT after Btech in CSE ? What future help it will hold for me and what kind of jobs will that provide ?
find the no of distinct triangles with integral valued sides and perimeter as 14 ?
a. 6
b. 5
c. 4
d. 3
is there any shortcut to find the digit sum of fist 100 natural numbers >
puys.. pls help
The following table gives the information regarding the games liked by the students in a school. Each student in the school likes at least one game.A - number of boys who like that game.B - number of girls who like that game.C - number of students who like only that game.
If there are 380 students in the school, then the least possible number of boys who like only basketball is
10
15
20
25
Question:
Each employee in a company is assigned a 15-digit ID number consisting of a string of 3's and 7's. Whenever x and y are two distinct ID numbers, then x and y diο¬er in at least three entries. The number of employees in the company is less than or equal to _____.
Options:
1. 512
2. 1024
3. 2048
4. 4096
CountDown has Begun. THE DAY is very near. Any last week advice or suggestions. Do's or Dont's.
Anything is Welcome.
@Shubh.i @scrabbler @vipin011 @sagarcat @singh.nishant 
If a + b + c β 0, find the condition that a, b and c must satisfy, so that the following system of equations has at least one solution.p + 3q - 4r = a,3p + 2q + 5r = b and 5p + 8q - 3r = c
1. a + b - 2c = 0
2. 2a - b + c = 0
3. 2a + 2b - c = 0
4. 2a + b - c = 0
One-fourth portion of each of the two solid spheres having radii 4 units and 6 units are joined together such that the centres of the two spheres coincide as shown in the figure given below. What is the total surface area (in sq. units) of the solid thus formed?
