Ques:- A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
Recent Answer : Added by Admin On 2022-09-29 16:10:32:
Given:
Speed of man downstream= 30/3=10km/h
Speed of man in upstream=18/3=6km/h
Speed of man in still water=1/2 (speed of upstream+ speed of down stream)
= 1/2 (10+6)
=1/2*16
=8km/h
Ques:- What is open beta testing?
Ques:- Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down?
Recent Answer : Added by Admin On 2020-05-17 12:01:39:
The definition of left and right depends on the observer and
is reversed when facing the opposite direction. The
definition of up and down does not depend on the orientation
of the observer.
Ques:- How does one use DES securely ?
Ques:- A can do a piece of work in 15 days and B in 20 days. They began the work together but 5 days before the completion of the work, A leaves. The work was completed in?
Ques:- If you could remove any of the 50 states, which state would it be and why?
Ques:- What is the abbreviation of NACCO, OPEAC, NEWS?
Recent Answer : Added by mia tan On 2022-09-25 16:02:44:
NON
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Ques:- ?Laterite Soil? is found in India in:(a) Western Ghats(b) Eastern Ghats(c) Deccan Plateau(d) Satpura region in Madhya Pradesh
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Ques:- Find out the wrong number in the series:
2880, 480, 92, 24, 8, 4, 4
A. 4
B. 8
C. 24
D. 92
Recent Answer : Added by Javed Walandkar On 2022-08-14 16:35:10:
Ques:- 5 men or 8 women do equal amount of work in a day. a job requires 3 men and 5 women to finish the job in 10 days how many woman are required to finish the job in 14 days.a) 10b) 7 c) 6 d) 12
Recent Answer : Added by Admin On 2022-09-28 17:23:05:
7days
Ques:- What is the average of first 10 prime numbers ?
Recent Answer : Added by Rajesh kanna On 2022-09-02 17:04:05:
12.9
2+3+5+7+11+13+17+19+23+29=129
129/10=12.9
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Ques:- Just imagine that you have enough money to retire right now. Would you?
Ques:- What was the day of the week of 1st January 2001?
A. Tuesday
B. Wednesday
C. Friday
D. Sunday
Recent Answer : Added by Muhammad Bilal On 2021-11-24 16:45:21:
Monday
Ques:- Discuss the acceptance of Corporate Social Responsibility in business by Indian companies in recent years. Justify your answer by giving present practices.
Ques:- There is a 50m long army platoon marching ahead. The last person in the platoon wants to give a letter to the first person leading the platoon. So while the platoon is marching he runs ahead, reaches the first person and hands over the letter to him and without stopping he runs and comes back to his original position. In the mean time the whole platoon has moved ahead by 50m. The question is how much distance did the last person cover in that time. Assuming that he ran the whole distance with uniform speed.
Recent Answer : Added by Admin On 2020-05-17 12:00:37:
The last person covered 120.71 meters.
It is given that the platoon and the last person moved with
uniform speed. Also, they both moved for the identical
amount of time. Hence, the ratio of the distance they
covered – while person moving forward and backword – are
equal.
Let’s assume that when the last person reached the first
person, the platoon moved X meters forward.
Thus, while moving forward the last person moved (50+X)
meters whereas the platoon moved X meters.
Similarly, while moving back the last person moved [50-(50-
X)] X meters whereas the platoon moved (50-X) meters.
Now, as the ratios are equal,
(50+X)/X = X/(50-X)
(50+X)*(50-X) = X*X
Solving, X=35.355 meters
Thus, total distance covered by the last person
= (50+X) + X
= 2*X + 50
= 2*(35.355) + 50
= 120.71 meters
Note that at first glance, one might think that the total
distance covered by the last person is 100 meters, as he
ran the total lenght of the platoon (50 meters) twice.
TRUE, but that’s the relative distance covered by the last
person i.e. assuming that the platoon is stationary.
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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.
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Ques:- Tell me about a time when you had too many things to doand you were requiredto prioritize your tasks.
Ques:- A train 150 m long running at 72 kmph crosses a platform in 25 sec. What is the length of the platform?
Recent Answer : Added by Sanjeev Singh kushvaha On 2021-08-07 04:11:11:
350m
Ques:- The average of first 10 odd numbers is?
Recent Answer : Added by nani Reddy On 2021-08-05 17:11:28:
first 10 odd num are 1,3,5,7,9,11,13,15,17,19
sum=100
avg=100/10
avg of 10 odd num =10
Ques:- Unix basics such as find, grep, pipes tees, wildcards, chmod.
Given:
Speed of man downstream= 30/3=10km/h
Speed of man in upstream=18/3=6km/h
Speed of man in still water=1/2 (speed of upstream+ speed of down stream)
= 1/2 (10+6)
=1/2*16
=8km/h