Ques:- After the typist writes 40 letters and addresses 40 envelopes, she inserts the letters randomly into the envelopes (1 letter per envelope). What is the probability that exactly 1 letter is inserted in an improper envelope’?
Recent Answer : Added by sk On 2022-08-14 16:29:33:
zero – as one letter cant be wrong – atleast two are to be wrong
Ques:- What is life ?
Ques:- Why airtel? Why you for this job
Ques:- If a man can cover 12 metres in one second, how many kilometres can he cover in 3 hours 45 minutes?
Recent Answer : Added by Sohini Mitra On 2022-09-02 17:02:39:
3hour 45 min = 13500 sec
In 1 sec he covers = 12 m
In 13500 sec he covers = 12×13500 m = (12×13500)/1000 km = 162 km
Ans : 162 km
Ques:- What is the optimal size of a project team, above which additional members do not contribute productivity equivalent to the percentage increase in the staff size?
Recent Answer : Added by Admin On 2020-05-17 12:01:51:
For optimal size of a project team..
the % increase in staff size should be “Zero”
reason:
additional member directly proportional to increase in
staff size..
Ques:- If a cow produces its first she-calf at age two years and after that produces another single she-calf every year, how many she-calves are there after 12 years? assuming none die.
Ques:- Last company working experience
Ques:- There was a race between 3 people. Me, Doug and Anne. When I take 21 steps the distance covered is equal to Doug's 24 steps and Anne's 28 steps. I take 6 steps to every 7 steps of Doug and 8 steps of Anne. Who won the race?
Recent Answer : Added by Kalyani Nanaware On 2022-08-14 16:43:09:
Doug won the race
Explanation-
The ratio of steps covered by me, Doug, and Anne is = 6:7:8
Since Distance covered in Me 21 steps = Distance covered by Doug 24 steps = Distance covered by Anne 28 steps
LCM (21, 24, 28) = 168
For a distance of 168 units, the ratio of the distance covered in each step is;
= 8 : 7 : 6
Therefore the ratio of speeds is;
= 8×6: 7×7: 6×8
= 48 : 49 : 48
Here, the speed of the Doug is more than the speed of me and Anne
Hence, Doug won the race
Ques:- Why do you wish to join our company?
Ques:- Will you like to work for Walmart someday ?
Ques:- If 12 men and 16 boys can do a piece of work in 5 days and 13 men together will 24 boys can do it in 4 days. Compare the daily work done by a man with that of a boy.
Recent Answer : Added by anit On 2021-10-08 16:31:40:
2:1
Ques:- A and B invests Rs.8000 and Rs.9000 in a business. After 4 months, A withdraws half of his capital and 2 months later, B withdraws one-third of his capital. In what ratio should they share the profits at the end of the year?
Recent Answer : Added by Sagnik Mandal On 2022-01-16 17:19:19:
2:3
Ques:- There are 5 red shoes, 4 green shoes. If one drasw randomly a shoe . what is the probability of getting redshoe
Recent Answer : Added by Admin On 2020-05-17 11:59:26:
5c1 / 9c1
Ques:- Find the least number of five digits which is exactly divisible by 12, 15 and 18?
Ques:- Are you applying for other jobs? Do you have any other offer in hand?
Ques:- How many shots of 1cm radius can be prepared from a sphere of 3cm radius?
Ques:- When was the last occasion that you had to use your negotiating skills to bring about a resolution that was in everyone?s best interest?
Ques:- Consider a pile of Diamonds on a table. A thief enters and steals 1/2 of the total quantity and then again 2 extra from the remaining. After some time a second thief enters and steals 1/2 of the remaining+2. Then 3rd thief enters and steals 1/2 of the remaining+2. Then 4th thief enters and steals 1/2 of the remaining+2. When the 5th one enters he finds 1 diamond on the table. Find out the total no. of diamonds originally on the table before the 1st thief entered.
Recent Answer : Added by Biplab On 2021-07-31 16:35:59:
76
Ques:- The ratio between the present ages of A and B is 5:3 respectively. The ratio between A’s age 4 years ago and B’s age 4 years hence is 1:1. What is the ratio between A’s age 4 years hence and B’s age 4 years ago?
Recent Answer : Added by Jozef Bugoš On 2022-03-09 16:28:41:
x = 5/3y
x – 4 = y + 4
x – 8 = y
x = 5/3 * (x-8)
5/3x – 40/3 = x
2/3x = 40/3
2x = 40
x = 20
y = 20 – 8
y = 12
x + 4 = 24
y – 4 = 8
Ratio is 24:8 , so 3:1
Ques:- The marks obtained by Vijay and Amith are in the ratio 4:5 and those obtained by Amith and Abhishek in the ratio of 3:2. The marks obtained by Vijay and Abhishek are in the ratio of?
Recent Answer : Added by Kabir Sani On 2022-03-09 16:30:49:
4:2
Ques:- The average of 10 numbers is 23. If each number is increased by 4, what will the new average be?
Recent Answer : Added by Rajeswari Suresh On 2021-10-10 19:03:42:
avg of 10nos.=23==>23*10=230
if each no increased by 4 ==> 4*10=40
then new avg is giveen by : 230+40=270
270/10=27
hence the new avg =27
Ques:- When we will you join here
Ques:- A train 100 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Recent Answer : Added by suhad On 2022-09-02 17:04:44:
32 Km/hr
Ques:- For attaining 9% growth rate during 11th plan, investment level has been estimated to be?
Ques:- Tel me something about yourself?
Ques:- What do u want to do with your life?
Ques:- Find the ratio in which rice at 7.20 a kg be mixed with rice at 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.
A. 1 : 3
B. 2 : 3
C. 3 : 4
D. 4 : 5
Recent Answer : Added by narendra On 2022-09-18 09:01:28:
b
Ques:- A cistern which could be filled in 9 hours takes one hour more to be filled owing to a leak in its bottom. If the cistern is full in what time will the leak empty it?
Recent Answer : Added by Sonali On 2020-11-17 15:27:52:
90 hours
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:- Find out the wrong number in the series:
4, 9, 16, 25, 32, 49
A. 16
B. 25
C. 32
D. 49
Recent Answer : Added by Enyonam Dora On 2023-06-12 13:05:40:
Please explain to me why the answer is C. Thank you
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zero – as one letter cant be wrong – atleast two are to be wrong