Ques:- Two pipes can fill a tank in 10 and 12 hours respectively while third pipe will make the tank empty in 20 hours. If all three pipes operate simultaneously, in how many hours the tank will be filled ?
Recent Answer : Added by Admin On 2020-05-17 12:01:50:
1/10 + 1/12 -1/20 = 15/2 i.e 7.5 h means 7 h & 30 min
Ques:- Can you tender a one rupee note in such a manner that there shall be total 50 coins but none of them would be 2 paise coins.?
Ques:- one man driving a car in a lonely forest .. it was raining at that moment …suddenly one of the car tyre got punchured…and he is having stephiny in his car …he gets it and he tried to fix that stephiny…when he removes the bolts of punchred tire all are gone into mud…all bolts… fell into mud…and that bolts he never get…then, how can he reach safely to home… by driving his car..?
Recent Answer : Added by Admin On 2020-05-17 12:03:16:
he removed one bolt in each three wheels
and fixed the bolts in stephiny wheel
Ques:- A train passes two cars moving in the direction at 45km/hr and 50km/hr in 36 sec and 54 sec respectively. What is the length of the train?
Ques:- If I walk at 3 kmph, I miss the train by 2 min, if however, I walk at 4 kmph. I reach the station 2 min before the arrival of the train. How far do I walk to reach the station?
Recent Answer : Added by Admin On 2022-09-29 16:36:42:
answer :
Let the distance which I walk to the station be x km Then Time needed to reach the station at 3 km/hr = (3x+602) hrs and
Time needed to reach the station at 4 km/hr = (4x+602) hrs But 3x+301=4x−301⇒3x−4x=−302=151
⇒124x−3x=151⇒12x=151⇒x=1512=54 km
Ques:- Worldwide size of designer wear industry is about?
A. Rs. 35 billion
B. Rs. 25 billion
C. Rs. 10 billion
D. Rs. 50 billion
Recent Answer : Added by Muhammad Imran On 2022-09-28 17:42:44:
It is About 35 Billion
Ques:- Why do you want to get this job?
Ques:- How would you define self-confidence?
Ques:- How to face the interview on call centre
Ques:- There are some houses in a street back to back .And they that house behind 10 was 23. How many houses in the street?
Recent Answer : Added by Admin On 2020-05-17 12:02:13:
26
Ques:- 1 monkey takes 3 min to eat 1 banana.how much time will 10 monkeys take to eat 10 bananas
Recent Answer : Added by Madhusudhan On 2021-12-09 18:40:11:
3 miutes
Ques:- Whats your name and why you join this company?
Ques:- Number Series 14,2,12,4,10,6,?
Recent Answer : Added by RAJESH DAMODARA On 2022-03-09 16:30:03:
8
Ques:- In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 per kg?
A. 3 : 7
B. 5 : 7
C. 7 : 3
D. 7 : 5
Recent Answer : Added by N On 2021-11-15 17:00:11:
7 : 3
Ques:- Why are you leaving that company?
Ques:- A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 sec. The speed of the train is?
Ques:- The temperature at Kochi is given by the function: – t2/6+4t+12 where t is the elapsed time since noon. What is the percentage rise (or fall) in temperature between 3.00 PM and 6.00 PM?
Recent Answer : Added by Admin On 2020-05-17 12:04:28:
temp at 3.oo pm is = 22.5
temp at 6.oo pm is = 30
thus, percentage rise= 7.5/30 *100
=25%
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:- Tell us about college and project.
Ques:- There are two water tanks X andY , X is much smaller than Y. While water fills at the rate of 1 liter every hour in X, it gets filled up like, 10, 20, 40, 80, 160 in tank Y. (At the end of first hour, Y has 10 liters, second hour it has 20 liters and so on). If tank Y is 1/32 filled of the 21 hours, what is total duration of hours required to fill it completely?
Recent Answer : Added by Grace On 2020-11-25 15:02:28:
Ques:- In what time will a railway train 60 m long moving at the rate of 36 kmph pass a telegraph post on its way?
Ques:- X, Y and Z invested Rs.6300, Rs.4200 and Rs.10500 respectively, in a partnership business. Find the share of A in profit of Rs.12100 after a year?
Recent Answer : Added by Sujanya On 2022-03-17 09:32:15:
3630
Ques:- Among the following statements, the statement which is not correct is
A. Every natural number is an integer.
B. Every natural number is a real number.
C. Every real number is a rational number.
D. Every integer is a rational number.
Recent Answer : Added by Cheryl Hepditch On 2021-12-20 03:54:45:
C. Every real number is a rational number.
Ques:- A car is travelling at a uniform speed. The driver sees a milestone showing a 2-digit number. After travelling for an hour the driver sees another milestone with the same digits in reverse order. After another hour the driver sees another milestone containing the same two digits. What is the average speed of the driver.
Ques:- There are 3 baskets. one of them have apples, one has oranges only and the other has mixture of apples and oranges. The labels on their baskets always lie. (i.e. if the label says oranges, you are sure that it doesn’t have oranges only,it could be a mixture) The task is to pick one basket and pick only one fruit from it and then correctly label all the three baskets.
Recent Answer : Added by Admin On 2020-05-17 12:01:30:
Take one fruit from box with label mixture. If we see
orange, because the basket lies (it cant have a mixture),
then it has only oranges. The other 2 are labeled apples and
oranges. The one labeled apples,
cannot have oranges inside, cos they are allready been
identified, and because it lies, it cannot have apples either.
So it has a mixture. And we are left with the one labeled
oranges that lies and has apples.
Ques:- What all software I know and what marks at school level did i get?
Ques:- You have two jars, 50 red marbles and 50 blue marbles. A jarwill be picked at random, and then a marble will be pickedfrom the jar. Placing all of the marbles in the jars, howcan you maximize the chances of a red marble being picked?What are the exact odds of getting a red marble using yourscheme?
1/10 + 1/12 -1/20 = 15/2 i.e 7.5 h means 7 h & 30 min