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.
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Ques:- Tell me something abt colour pink? and blue?
Ques:- ?France 24? is?
Ques:- Value of (x-a)(x-b). . . . (x-z)
Ques:- What is your main role in last company & work process?
Ques:- 30 men can make 120 articles in 8 days working 10 hours/day. If 10 men leave the work after 4 days, then how many hours per day should the rest of the men work to complete the job as per the schedule? 15 22 12 18
Ques:- A/B = 3/5 15A = ?
Recent Answer : :
5A=3B,
*3 SO,
15A=9B
Ques:- Which of the following Indian company has been listed at the top in Global-500 list ?
Ques:- If + means * and * means / and / means %. what is the value of 2+3*5/7?
Recent Answer : :
wake up guys and see modulo % can return only integer value.
So answer will be 1 and all other answers are wrong. You can
run your equation in C code and check the output.
Ques:- What did your family mate do for living?
Ques:- Consider the following statements about natural numbers
(1) There exists a smaller natural number.
(2) There exists a largest natural number.
(3) Between two natural numbers, there is always a natural number.
Which of the above statement is/are correct?
(1) There exists a smaller natural number.
(2) There exists a largest natural number.
(3) Between two natural numbers, there is always a natural number.
Which of the above statement is/are correct?
A. None
B. Only 1
C. 1 and 2
D. 2 and 3
Recent Answer : :
B
Ques:- General Gasslefield, accused of high treason, is sentenced to death by the court-martial. He is allowed to make a final statement, after which he will be shot if the statement is false or will be hung if the statement is true. Gasslefield makes his final statement and is released. What could he have said?
Ques:- Do you know what is your job profile?
Ques:- If each of the odd digits in the number 54638 is decreased by ‘1’ and each of the even digits is increased by ‘1’, then which of the following will be the sum of the digits of the new number?
Recent Answer : :
( e ) None of these
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Ques:- The difference between the compound interest compounded annually and simple interest for 2 years at 20% per annum is Rs.144. Find the principal?
Recent Answer : :
3600
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Ques:- Complete the series 196 : 256 :: 324 : __
Recent Answer : :
Answer is 400.(14^2=196, 16^2=256, 18^2=324, 20^2=400.)
Ques:- Varun’s expenditures and savings are in the ratio of 4 : 1. His income increases by 20%. If his savings increase by 12% by how much % should his expenditure increase?
A. 12%
B. 20%
C. 22%
D. 32%
Recent Answer : :
C. 22%
Ques:- We are not pay masters still why would you like Exl?
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Ques:- 50% of 250 is what % of 300?
Recent Answer : :
60%
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Ques:- There are 4 people in a closed room and you are waiting outside to enter into the room. You can enter only when one of them opens the door. The probability that somebody will open the door is 1/2. Now what is the probability that the door will be opened so that you can go inside?
Recent Answer : :
The probability that no one opens the door would be
0.5×0.5×0.5×0.5= 0.0625
So, the probability that atleast one opens the door is 1-0.0625= 0.9375
Ques:- Persons A and B. Person A picks a random no. from 1 to 1000.Then person B picks a random no. from 1 to 1000. What is the probability of B getting no. greater then what A has picked.
Recent Answer : :
1(100-1)+ 2(100-2)+…..99(100-99)
N=100
solution: N(N-1)
100(99)= 9900
Ques:- Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is?
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.