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in a company 30% are supervisors and 40% employees are male if 60% of supervisors are male. What is the probability? That a randomly chosen employee is a male or female?
manoj004ece
- Nov 2nd, 2010
Many of them said answer is 0.4 but it s correct only when they ask what us
the problem of choosing male, but in question they have clearly given male or
female, so at any point of time if we choose an employee either it should be male
or female, so the prob s 1. This is correct answer
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Max Intersections
There are 11 lines in plane. How many intersections (Maximum) can be made?
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Address Probability
What is the probabiltity of writing correct addresses to 4 letters to be posted?
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To find the number of cats.
A number of cats got together and decided to kill between them 999919 mice. Every cat killed an equal number of mice. Each cat killed more mice than there were cats. How many cats do you think there were?
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anirban_goswami- Member Since Feb-2008 | Mar 11th, 2008
No. of cats = x(say)
Therefore, no. of mice killed by each cat = 999919/x (since, they killed equal no. of mice)
Now, given that
(999919/x) is greater than x, i.e
999919/x > x, implies x*x<999919
Therefore, x < 999.95(approx). Now, the only no. which is nearest to but less than 999.95 and is a factor of 999919 is 991.
Thus, x = 991 and no. of mice = 999919/991 = 1009.amith.aec
- Oct 29th, 2010
Observing the num 999919 which is the total num of rats being eaten..we can write it as?(1000000-81) = ? (1000^2-9^2) ? = ? (1000+9)(1000-9) ? = ?(1009)(991)so total num of rats killed =(1009)(9...
anirban_goswami
- Mar 11th, 2008
No. of cats = x(say)Therefore, no. of mice killed by each cat = 999919/x (since, they killed equal no. of mice) Now, given that &...
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Estates Will
A Father is willing his estates like this. If a boy is born, wife has 1/3 part and remaining for boy. If a girl is born, Wife has 2/3 and remaining for the girl. But twins (Boy + Girl) are born. What is the share that the daughter would get?
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My flight takes of at 2pm from a place at 18N 40E and landed 10 Hrs later at a place with coordinates 36N40W. What is the local time when my plane landed? 1. 8.00pm 2. 6.00pm 3. 12.00am 4. 6.40pm
summi
- Oct 4th, 2007
While going from East to West we consider longitude in East West and not North South.180-(10+70)=100 deg 100deg=400min=40/3hr
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A work is done by the people in 24 min. One of them can do this work alone in 40 min. How much time required to do the same work for the second person
60min
pritiyadav.537
- Oct 10th, 2010
60 min. Suppose the amount of work to be done is x. And two people are A and B. If A in 40 min can do x work. then A in 24 min will do 24x/40 work(Unitary method). the work done by B in 24 min i...
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2 pencils costs 8 cents, then 5 pencils cost how much
20c
pravesh28
- Feb 27th, 2010
40 cent ( get1 free1 offer)its infinite ans if both pencil have same cost then 20 cent
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Optical Cable Laying Cost
A optical cable is to be run from a junction point on the bank of a river 900 meters wide to an office that is located 3000 meters downstream on the opposite bank. If the cost of laying cable under water is Rs. 5 per meter and that of laying overhead on land is Rs. 4 per meter, find the point downstream where the cable is to cut across the river.(a) 450
(b) 3900
(c) 1800rajpalwindersmvdu
- Aug 30th, 2010
1) 450Since cost of putting cable on land is less than that under water.So we lay cable mostly on ground so best solution is 450
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To find the day of the week
Find out what day of the week was January 12, 1979?
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bharat bhushan- Member Since Feb-2008 | Feb 13th, 2008
when we move down in yearwise a day decreases. but when a leap year comes 2 days gets decreased..for e.g.
12 jan 2008 --- saturday
12 jan 2007 --- friday
12 jan 2006 --- thursday
12 jan 2005 --- wednesday
12 jan 2004 --- monday..
so in 4 years five days gets reduced... so in this manner we can find out in which year wat day was on 12 jan..
ANSWER ----- it was friday on 12 jan 1979......SURAJTHEGREAT
- May 29th, 2010
jan 12,1979- lets determine the no. of odd days upto year 1978-(1600+300+78)1600 is divisible by 400,therefore the no.of odd days is 0...300 yrs has 1 odd day78yrs consist of (19 leap + 59 ordi...
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+ means * and * means / and / means % what is the value of 2+3*5/7
prititripathi
- Sep 25th, 2010
If operator precedence is taken in C language then 2*3/5%7=1from L to R PRECEDENCE2*3=66/5=1 it give question in return1%7=1 it gives remainder in return
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Find the Value and Express in Decimal
If A= 0 0 0 0 1 1 1 1B= 0 0 1 1 0 0 1 1C= 0 1 0 1 0 1 0 1Then find the value of [A U C] U B and express it in decimal.
atiq_ke_saath
- Apr 21st, 2010
A = 0 0 0 0 1 1 1 1B = 0 0 1 1 0 0 1 1C = 0 1 0 1 0 1 0 1 (OR-ing)------------------------ 0 1 1 1 1 1 1 1
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2 trees are there, One grows at 3/5 of the other. In 4 years total growth of the trees is 8 ft. What growth will smaller tree have in 2 years.
2 ft
leeyaitb2w
- Sep 23rd, 2010
4x+3/5(4x)=8;4x+12x/5=8;32x=40;x=1.25then,3/5(4(1.25))=3(for 4 years)for 1 year=3/4==>0.75for 2 year==>2(0.75)==>1.5 feetans:1.5 f
harshatenneti
- Sep 18th, 2010
Answer is 1.5 ftLet us assume one tree grows xft in 4 yrs, 2nd tree grows 3/5(x)ft...Total x+3/5(x)=8x=5 ft..hence 1st tree 5ft 2nd tree 3 ft for 4 yrs2nd tree for 2 yrs is 3/2=1.5 ft
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Ten Boxes
Ten boxes are there. Each ball weighs 100 gms. One ball is weighing 90 gms. i) If there are 3 balls (n=3) in each box, how many times will it take to find 90 gms ball? ii) with n=10iii) with n=9
Deepak90
- Sep 20th, 2010
If there are 10 boxes only 3 times weighing is enough Ist time place 3-3 If one side is less then take one box in hand from that side and weight other 2 as 1-1, if they are equal the box in your ...
aman15490
- Feb 10th, 2010
It would Only take 4 Iterations to determine the 90 gm ball( In First Case n=3). Let's have a Look1. Pair of 5 - 5 boxes. The Box Pair That Goes Down Is The One Pair That Contains The 90 gm ...
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TV Model
If a company produces 15 different model of TV sets, 2 inchs screen and 4 different model of 4 inch screen size then how many model should vendor has for all the model.
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Age of a Person increased by 10%
Age of a person increased by 10% from last year. What is the current ratio from last year.a.1:10 b.11:10c.11:12Which one is correct?
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Consecutive Numbers
Sum of three consecutive nos isA)10 B)22 C)25 D)30 E)40
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Swimming People
All persons know either swimming or rowing. There are 14 persons who know only swimming and 14 persons who know only rowing. 8 tickets sold for rowing. How many people are there for swimming?
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A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?
Options are:38.5sq.m,155sq.m,144sq.m,19.25sq.m
kaushalks
- Sep 15th, 2010
The correct answer is 38.5. this can be found out using area of sector formula pi*R^2*theta/360 pi*7^2*90/360 38.5sqm
rakesh8014
- Jul 6th, 2010
As the goat is tied at one corner so it can only graze 1/4 area of the circle having radius 7m.so the required ans is 1/4 (area of circle) = 38.5
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Storage Space
The storage space required is given by the function P(N) = 4000 √N, where N is the number of boxes used. Find the percentage change in storage if the number of boxes is increased by 1%.(a) 0.75%
(b) 0.25%
(c) 0.5%
(d) 1%
(e) 2%harshil102
- Sep 14th, 2010
P(N) = 4000 √N.......taking n=16..P(N) = 4000 √16=16000..just assume. increasing n by 1%.....so n=16.16deb p(n)=4000*√16.16=16080....dividing 1680=.099=1so ans is 1
ankursinghlucknow
- Jun 15th, 2010
I guess some ppl have mis-interpreted the question.. well anyways acc. 2 me 1- IF p(n)=4000/n then ans=1%(as solved in above posts) 2- IF p(n)=4000 √n then,% change=(4000 √n - 4000 √...
Aptitude Interview Questions
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