Ques:- A car covers a certain distance taking 7 hours in forward journey. During the return journey, speed was increased by12 kmph and it takes 5 hours. What is total distance covered?
Recent Answer : Added by Ashwin wankhede On 2021-08-06 04:58:04:
d=7s—–equation 1
d=5(s+12)
7s=5(s+12)
7s=5s+60
2s=60
s=30
from equation 1
d=7*30
d =210km
Ques:- Education & training
Ques:- What is the average of first 10 natural numbers ?
Recent Answer : Added by Vaishali Singh On 2021-08-11 19:02:52:
n(n+1)/2
=10*11/2
55
Ques:- A town has a population of 500000 and 42% of males and 28% of females are married to the same town. Find the total number of males.
Recent Answer : Added by arjun On 2021-12-09 18:40:05:
20000
Ques:- In a class , except 18 all are above 50 years. 15 are below 50 years of age. how many people are there
Recent Answer : Added by 9074743593 On 2021-07-29 16:19:36:
None of these
Ques:- One person is wearing Black and White shoes as his pair. If he is having 20 white and 20 Black shoes. What will be the less number of time he have try to take his correct pair of shoes.
Ques:- How long do you think you will work for us after we hire you?
Ques:- When x is real what is the least value of (x**2-6*x+5)/(x**2+2*x+1)
Recent Answer : Added by Admin On 2020-05-17 12:01:23:
(x**2 – 6* x + 5) = (x-1)*(x-5)
(x**2 + 2 * x + 1) = (x + 1) * (x+1) = (x+1)**2
For what x is (x-1)*(x-5)/( (x+1)**2) a minimum?
One way to answer this question is by using calculus.
Take the derivative, and set to zero.
Since this is a fraction of polynomials, and a fraction is
zero only if it’s numerator is zero, we need calculate only
the numerator of the derivative and set it to zero.
The numerator of the
Derivative of (x-1)*(x-5)/( (x+1)**2) is
( (x-1) + (x-5) ) ( x+1)**2 – (x-1)(x-5)( 2 (x+1) )
= (2 x – 6) (x+1)**2 – (2) (x-1)(x-5) (x+1)
= 0
Divide through by 2 (x+1)
(x-3)(x+1) – (x-1)(x-5) = 0
(x**2 – 2 x – 3 ) – (x**2 – 6 x + 5) = 0
x**2 – x**2 – 2 x + 6 x – 3 – 5 = 0
4 x – 8 = 0
x = 2
Plugging in x = 2 into the original
(x**2-6*x+5)/(x**2+2*x+1)
gives us (2**2 – 6 * 2 + 5)/(2**2 + 2*2 + 1)
= (4 – 12 + 5) / (4 + 4 + 1) = -3/9 = -1/3
Least value is -1/3
Ques:- What was your work in your last company?
Ques:- Total 5 children,youngest 3yrs old and no 2 children hve the same age ,sum of their age is26.Find the age of eldest?
Recent Answer : Added by Admin On 2020-05-17 12:01:42:
8 is the answer
b’coz no two have the same age
8+6+5+4+3=26
Ques:- Ratio between two numbers is 3: 4 and their sum is 420. What is the smaller number?
Recent Answer : Added by DHARANI R On 2021-08-26 16:05:51:
3:4
3x:4x
3x+4x=420
7x=420
x=60
smaller number=3(60)=180.
Ques:- A light bulb is hanging in a room. Outside of the room there are three switches, of which only one is connected to the lamp. In the starting situation, all switches are 'off' and the bulb is not lit. If it is allowed to check in the room only once to see if the bulb is lit or not (this is not visible from the outside), how can you determine with which of the three switches the light bulb can be switched on?
Ques:- Who is first Indian woman president of Indian National Congress?1.S Krilani.2.S Naidu3.Indira Gandhi4.Anie Bascent
Recent Answer : Added by Chitra Kushwaha On 2021-03-31 15:25:54:
4. Annie Besant
Ques:- The reasons you would like to work for bus company. You should also write to give any relevant information, which may have a bearing on your suitability to be a PCV driver.
Ques:- What is the correct chronological order of the following Mughal Kings?
A. Babar, Akbar, Jahangir, Humayun
B. Akbar, Jahangir, Babar, Humayun
C. Babar, Humayun, Akbar, Jahangir
D. Humayun, Babar, Akbar, Jahangir
Recent Answer : Added by Mrs.PersisRuban On 2022-08-14 16:39:54:
C
Ques:- If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself.
A. 6
B. 8
C. 10
D. 12
E. 14
Recent Answer : Added by Mariam Mubarak On 2022-01-16 17:19:10:
6
Ques:- The citizens of planet nigiet are 8 fingered and have thus developed their decimal system in base 8. A certain street in nigiet contains 1000 (in base 8) buildings numbered 1 to 1000. How many 3s are used in numbering these buildings?
Recent Answer : Added by Mahak On 2022-08-14 16:29:26:
answer is one
Ques:- Looking back on your last position, have you done your best work?
Ques:- If in a certain language FASHION is coded as FOIHSAN, how is PROBLEM coded in that code ?
Recent Answer : Added by Sowji On 2022-05-17 08:54:19:
FASHION= FOIHSAN
It is F-ASHIO-N to F-OIHSA-N.
So PROBLEM will be P-ROBLE-M,
the answer is PELBORM.
Ques:- The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?
Recent Answer : Added by Pavan On 2021-10-12 12:52:36:
2* pi* r ( h + r )
r=3cm
h=7cm
2 * 22/7 *7 ( 10 ) = 440 sq cm
Ques:- Are you willing to work overtime? Nights? Weekends?
Ques:- A train 100 meters long passes a platform 100 meters long in seconds. The speed of the train is
A. 36 km/hr
B. 52 km/hr
C. 72 km/hr
D. 92 km/hr
Recent Answer : Added by ThinkAlike On 2022-03-09 16:31:07:
= 100 + 100 = 200 m
Time taken by train = 10 sec.
∵ Speed = Distance/Time
⇒ Speed of train = 200/10 = 20 m/sec.
∴ Speed of train = 20 × 18/5 = 72 kmph.
In question they left 10 seconds
Ques:- Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?
Recent Answer : Added by Rashid Ather Deshmukh On 2021-10-07 15:42:06:
12
Ques:- HOW MANY LINES CAN BE DRAWN FROM 10 POINTS IN A CIRCLE?
Recent Answer : Added by Admin On 2022-09-28 17:25:01:
Since, there are 10 points on the circle and to draw a chord we need to connect any two points on the circle to make it a straight line, which implies that the number of chords = No of lines connecting any two points out of the 10 points
= 10C2 = 10*9/2 = 45 chords.
Ques:- You will be posted in any part of the world and you will be transferred periodically, with minimum of six months, are you willing to join?
Ques:- A person takes 20 minutes more to cover a certain distance by decreasing his speed by 20%. What is the time taken to cover the distance at his original speed?
Ques:- A train travelled from station P to Q in 8 hours and came back from station Q to P is 6 hours. What would be the ratio of the speed of the train while traveling from station P to Q to that from station Q to P?
Recent Answer : Added by Sahil On 2021-08-03 15:59:07:
d=7s—–equation 1
d=5(s+12)
7s=5(s+12)
7s=5s+60
2s=60
s=30
from equation 1
d=7*30
d =210km