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Base Eight Numbering
The citizens of planet X are 8 fingered and have thus developed their decimal system in base 8. A certain street on planet X contains 1000 buildings numbered 1 to 1000. How many 3s are used in numbering these buildings?
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9 Digit Numbers
How many 9 digit numbers are possible by using the digits 1,2,3,4,5 which are divisible by 4 if the repetition is allowed?
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Find the Poisoned Can
If there are 30 cans out of them one is poisoned if a man tastes very little he will die within 14 hours. Now mice are used to test in 24 hours, how many mices are required to find the poisoned can?
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Time Calculation
There are 4 women having walking speed as 1min, 2min, 4min, 5min. If one or two women can cross bridge at a time with flashlight, then what is min. time required for 4 women to cross bridge without using flashlight?
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Aptitude work days Question
Person A can complete the job in 10 days, Person B can complete the job in20 days. If both together work then in how many days they will finish d work ?
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English and Telugu
In a class of 150 students 55 speak English; 85 speak Telugu and 30 speak neither English nor Telugu. 1. How many speak both English and Telugu?2. How many speak only Telugu?3. How many speak at least one of the two languages from English and Telugu?
raje243
- Feb 16th, 2011
Total=150English=55Telugu=85none/ neither English nor Telugu=30No. of Students who speak only one or both=150-30=120so, 120 stud's can speak english or telugu or both.then, No. of Stud's ...
pramodh holla
- Sep 28th, 2010
In the given question. n(e^t)=n(e)+n(t)-n(e or t)
n(e and t)=n - neither who speak English nor Telugu=150-30=>120.
n(e and t)=n(e)+n(t)-n(e or t)
120=55+85-n(e or t)
n(e or t)=20.
n(only Telugu)=n(t)-n(e or t)=85-20 = 65.
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What is the last digit of 7291
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Given d value of log 3.142 & log 3.143. to find the value of log 3.141
prititripathi
- Feb 25th, 2011
By applying log formula logm/logn=logm-lognn log(3.143)/log(3.142)=log.0001againlog(3.142-.001)=log 3.141
hmvasista
- Apr 29th, 2010
Log indentities are:log a - log b = log(a/b)log a + log b = log(ab)we can proceed by taking letlog 3.142 = x, so 3.142= 10^xlog 3.143 = y, so 3.143= 10^yand make appropriate substitutions....
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How to solve the $ and * problem. if $=1,*=0value 1 doubles and shift to left place.t(for ex:4=$**,3=$$)even i dont know the quetion properly. but the samepattren question appeared in cts too.pls expLCM(9,18,27)=
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Shwethascar- Member Since Jul-2008 | Jul 8th, 2008
lcm of 9,18,27 is 54
that can be represented as 110110 in binary
that's $$*$$*prititripathi
- Feb 25th, 2011
Lcm (9,18,27)=54convert it into binary u vll get 110110express it in $ * as =$$*$$*
Shwethascar
- Jul 8th, 2008
Lcm of 9,18,27 is 54that can be represented as 110110 in binarythat's $$*$$*
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If the circumference of a circle is 100 units, Then what will the length of the arc described by an angle of 20 degree?
prititripathi
- Feb 25th, 2011
Length of arc =angle/360 *circumferenceso (20/360)*100length of arc=50/9
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Three independent mechanisms A,B and C have been incorporated for fuel saving in a car producing respectively 30%, 20%, and 40% efficiency. Assuming that they operate independently, what is the net fuel efficiency achieved?
prititripathi
- Feb 25th, 2011
Fuel saving 30%=100-30so total vll b=((100-30)*100-20)*(100-40))/100*100*10066.4
c.sindhureddy
- Feb 13th, 2010
Why are you subtracting it from 100?They gave us there efficiences right directly.Can you clarify me plz.
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Find the next number in the series 3, 4, 6, 9, 13,?
Next number will be 18.This is fibonacci series X, X+1, X+2, X+3.....
prititripathi
- Feb 25th, 2011
Series is like dat difference b/w 3-4 is 0next one 1 ,2 n so onso next no. vll b 18
hmvasista
- Apr 29th, 2010
The answer is 18 ie 3+1=4 4+2=6 6+3=9 9+4=13so 13+5=18This is not a fibonacci series.... it is 0,1,1,2,3,5,8,13,21,34....
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600 to be seated. 10 benches are less. 2 more persons are required to be seated in each bench. How many benches.209364460
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Answered by: naveengupta
- Jun 26th, 2007
ans is 60 benches
let x=no of benches
y=no of students per bench
given
x*y=600,---------(1)
and given that 10 benches are less hence 2 students are seated more than per bench then
600=(x-10)*(y+2)
600=xy+2x-10y-20------------(2)
since xy=600
then eq(2) is
2x-10y=20
2x-10(600/x)=20
on solving
we get x=60prititripathi
- Feb 25th, 2011
Given a*b=600& (a-10)*(b+2)=600ab-10b+2a-20=600we knw ab=600so 2a-10b=202a-10*600/a=20solve quadratic eq. we get a=60 b=10
SAUREEN ADANI
- Jun 10th, 2010
10*60=60012*50=600it means per bench 10 student requirs 60 benches.but 10 are less so that on 50 benches to accomodate 12 per bench. it means 2 more to be seated on each bench. so the answer is 60.
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Pipes are laid by an oil company
Pipes are laid by an oil company. If the company has to lay down 3km of pipes and each pipe is 25 meters long, calculate and print the number of pipes needed to cober the distance
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Minimum Weighing Operations
If we have to weigh 31 kgs of rice using only 1 kg stone. What are the minimum number of weighing operations required?
fishpie_123
- Mar 2nd, 2011
5 weighing operations:Rice Counter weight==== ==============1kg (1kg stone)2kg (1kg rice + 1kg stone)4kg (1+2+1)8kg (1+2+4+1)16kg (1+2+4+8+1)================total: 31kg rice
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Upside Down
In the 20th century there is a year, which does not change if viewed upside down. Which is the year?
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Boys in a Row
Some boys are standing in a row, Suresh is 10th from right and Amar is seventh from left. If there are five boys in between Suresh and Amar, How many boys are there in the row?
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Find Number of Pages in the Book
There is a book with some number of papers with numbers on the book were cut. So a boy counts the number of pages and given numbers to that book. He got 3 digit numbers 61 times. Then find the number of pages in that book?
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Minna Mathew- Member Since Jan-2011 | Jan 6th, 2011
160 ........ie (100 to 160) therefore total 61 times
so the anser is 160 -
Bobby Weighs
Bobby weighs 160 lbs more than his sister maria. Their combined weight is 200lbs. How many lbs does bobby weigh?
ganesan4632
- May 21st, 2011
Bobby Weighs : 180 lbs ( 160 lbs greater than her sister - ?(180-20))Sister Weigh - 20 lbsCombined weight : 200 Lbs
lavanya.rjs
- Jan 4th, 2011
Let Bobby's weight be x lbs.then Maria's weight will be (x-160) lbs.so, x+x-160= 200hence x= 180 lbs.
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Reverse the Digits of Age of Father
When you reverse the digits of age of father you will get the age of son. One year ago the age of father was twice that of son's age. What are the current ages of father and son?
ganesan4632
- May 21st, 2011
Current Age:Father Age should be - 73 Yearsson age will be - 37 Years (Reversal of Father Age)One Year Before:Father Age is 72 Years(Double of Son's age)Son Age is - 36 Years
ananthk
- Nov 25th, 2010
This type of qn`s done by trail and error methods. firm you have to form eq. based on given data then you have to submit values given in ans.if f=10x+y is father age then s=10y+x is son agethen f-1=2(...
Aptitude Interview Questions
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