infosys placement papers - skillgun
Museum decorated with bunch of lights and those lights glow for every 13 seconds . How many times did it glow between 1:57:58 and 3:20:47 am.
383 + 1 = 384
In second world war time,the clock sets that Fifty minutes ago if it was four times as many minutes past three o'clock,how many minutes is it to six o'clock?
The Bus travels from chennai to reach Bangalore at 11`o clock , if it goes by 30 mph it reaches 1 hour before, if it goes by 20 mph it reaches 1 hour late. what is the distance it it travels and what is the speed maintain by Bus to reach Bangalore at exact time?
120 miles and 24 mph
110 miles and 20 mph
100 miles and 15 mph
50 miles and 12 mph
If a five digit number 119ab is divisible by 20, then find a and b ?
Here 119ab is divisible by 20 i.e first we have to find lcm of 20 is 5 * 4 .so 119ab is divisible by 5 and 4.If it is divisible by 5 then last digit must be 0 and if it is divisble by then last two digits must be divisible by 4 i.e 11920.so a=2 b=0
A Person said he spent 1/6 of his as a child, 1/12 as salesman in a liquor shop, 1/7 and 5 years as a politician and a good husband respectively. At that time Amar was born.Amar was selected as bank employee four years back.when he was half of his age. What is his age ?
Assume that he lived x years.x/6 + x/12 + x/7 + 5 + 4 + x/2 = x. Solving x= 84
Evaluate the number which is lesser than 500, which when divided by 1,3,4,5 leaves no remainder ?
the answer would be the lcm of 1,3,4,5 that is 60.
One day Hari and Giri set our watches together. None of us was aware that Giri watch was getting faster by 2 min per hour and Hari’s watch was getting slower by 1 min per hour. After sometime, both of them discovered that Giri watch was 1 hr ahead of Hari’s watch. Can you find out after how long they noticed this ?
The differnce between the time would be 2min + 1min= 3min so there is a difference of 3min for every1 hour
differeence of 60 min would be 60*1hour/3min= 20hours
There is hilll of depth 30m and mouse is at bottom of the hill. It jumps 3m in one day and falls back 2m in the same day. how many days will it take for the mouse to come out of the hill ?
The number of cuffs and collar pieces which belong to charan and pawan. there total is 30. charan and pawan give all of them to the laundry. charan collects half the number of cuffs and one-third the number of collars and pays his share of 27 cents. 4cuffs costs 5 collars.now tell how much did pawan pay for his share ?
Here the total number of the cuffs be X
and the total number of the collar be 30-X
Now Charan Collects 1/2*X + 1/3*(30-X) = X/6 + 10
so pawan would collect 1/2*X + 2/3*(30-X) = -X/6 + 20
by inspection and trial and error we can see that X=12
now putting X=12 in first equation we get 12 and put in eqn 2 we get 18
so charan pays 27 cents for 12 pieces
so pawan will pay cents for his 18 pieces
Somesh went to shopping for home tihings and then he sold two buckets for Rs. 210 at a total profit of 5%.He sold buckets at a loss of 10% and another at a profit of 10%. What is the price of each buckets?
Here he bought the two buckets at 200.One is 150 and other is 50
If Rahul's rank from the beginning is 10th in a classroom of students and ranks 12th from the last. how many students are there in the classroom.?
total students 9+1+11=21
A postman collects stamps and makes one full stamp divided in 8 parts. If he gets 64 parts how many full stamps are there?
In a campaign a man looses his way. First he walks one mile west then half mile to south. Then 1/4 mile to east, then 1/8 mile to North and so on.Finally how far he is from his starting point and in which direction.?
The horses are eating the food that It takes 24 days for 70 horses and 60 days for 30 horses to eat the whole food. How many horses are needed to eat the food in 96 days.?
Pranav was counting down from 32.saran was counting upwards the numbers starting from 1 and he was calling out only the odd numbers. What common number will they call out at the same time if they were calling at the same speed ?
They will not call out the same number
Pranav: 32 31 30 29 28 27 26 25 24 23 22 21 20... Saran: 1 3 5 7 9 11 13 15 17 19 21 23 25... Clearly it is seen that they never call out same number at the same time.
Rajani moves towards South-east a distance of 8 km, then she moves towards West and travels a distance of 12m. From here, she moves towards North-west a distance of 8 m and finally she moves a distance of 2m towards East and stop at that point. How far is the starting point from where she stood?
By using the diagram he stand 10m away from starting point
In an office,women employees are 1/3 and women employees who are married have children are 1/3. the men employees who are married are 3/4 and 2/3 rd of the married men employees have children, what part of Employees are without children?
Assume total number of Employees be x
Number of women = x/3 and number of men = 2x/3 Women married=1/2 * x/3 = x/6
Women having children = 1/3 *x/6 =x/18
Married Men =3/4 *2x/3 = x/2
Men having Children =2/3 * x/2 = x/3
Employees with children = x/3 + x/18 = 7x/18
Hence,Employees without children = x- 7x/18 = 11x/18
If the cost of the Bulb is Rs.60 and a profit of 10% over selling price is earned What is the selling price of a Bulb?
Here we use the formula like sp=cp(100+p%)/100
The speed of the Auto in Outside stops are 54kmph and an inside stops are 45kmph.for how many minutes does the Auto stop per hr.?
Due to stoppages,it covers 9km less.
time taken to cover 9 km is [9/54 *60] min = 10min
In a school Ashok and naryana starting from the same place walk at a rate of 4kmph and 4.5kmph respectively.what time will they take to be 9.5km apart, if both of them walk in the same direction ?
The relative speed of the ashok and narayana = 4.5kmph – 4kmph = 0.5 kmph .Distance between them is 9.5 km
Time= 9.5km / 0.5 kmph = 19 hrs
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