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What is the sum of all the four digit numbers formed using the digits 0, 1, 2 and 3. None of the two digits should be repeated.
superstardlx
- Jul 5th, 2011
total number of such numbers = 18 sum of all digits in units place :0*2 ( 3 in thousands place)1*22*20*2 (2 in thousands place)1*23*20*2 (1 in thousands place)2*23*2------244 in units place...2 c...
santhosh_sandy
- Jul 4th, 2011
In addition to them we have to add 012303210132021303120231these are also digits dude!!! so i think? your answer (38664) must be added with 1332which leads to 39996 would be the right answer!!!?? what do u say guys??
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The size of the float data type in C language is …
S
- Mar 19th, 2006
Compiler dependent In TURBOC it is 4 But depends from compiler to compiler it varies
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If first term of AP is 5. 16th term is 45.find the sum of first 16 terms?
Srishukkumar
- Sep 18th, 2008
A=5t 16=a+15dsum=n(2a+(n-1)d)/2 but t=a+(n-1)dtherefore sum=16(5+45)/2 =400
ROHAN
- Mar 6th, 2006
1st term=5 16th term=45 ; 5+15d=45 where d is common difference. d=8/3.therefore sum of 1st 16 terms= 16/2(2*5 + 15*8/3)=400
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If a^x=b^y=c^z and b^2=ac then find x+z/xz=?
2/y
mohammed.ziaullah
- Aug 6th, 2010
A^x=b^y=c^z=k(say)then,a=k^(1/x),b=k^(1/y),c=k^(1/z);..........(1)given b^2=ac {K^(1/y)}^2=k^(1/x)*k^(1/z);k^(2/y)=k^(1/x+1/z)2/y=1/x+1/z2/y=x+z/xzhence the answer is 2/y "100% it is correct answer"
darshan029@gmail.com
- Jun 15th, 2007
Let a^x=b^y=c^z=kso, a=k^1/x , b=k^1/y , c=k^1/zb^2=acso, k^(1/y)^2=k^1/x+k^1/z 1/y^2=1/x+1/z 1/y^2=x+z/xzans is 1/y^2
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One circular array is given(means memory allocation tales place in circular fashion) diamension(9X7) and sarting add. is 3000,What is the address od (2,3)........ What is the answer? Pls explain to me with steps
tamaldutta000001
- Aug 26th, 2010
I cant draw the pix here so giving the formulaThe address would beB(base add.)+[(i-Row_start)*(Column_limit-Column_start+1)+(j-Column_start)]*width provided that array index start from (1,1). Here i...
vishal
- Nov 30th, 2006
it's a 9x7 int array so it reqiure a 126 bytes for storing.b'ze integer value need 2 byes of memory allocation .and starting add is 3000so starting add of 2x3 will be 3012.
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A power unit is there by the bank of the river of 750 meters width. A cable is made from power unit to power a plant opposite to that of the river and 1500mts away from the power unit. The cost of the cable below water is Rs. 15/- per meter and cost of cable on the bank is Rs.12/- per meter. Find the total of laying the cab
Vaibhav Pate
- Jun 4th, 2007
Width of river = 750 metersplant from the power unit = 1500 metershence, the cable on the bank is 1500 - 750 = 750 meters.so, total cost = (750*15) + (750*12) = Rs. 20250/-
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In a certain code, the symbol for 0 (zero) is. * and that for 1 is $. The numb.:rs greater than 1 are to be written only by using the two symbols given above. The value of the symbol for 1 doubles itself every time it shifts one place to the left.(For example, 4 is written as $**; and; 3 is written as $$)
johnjustin
- Apr 8th, 2008
First you have to find the binary value for that no. Then you can replace 1 by $ and 0 by *
gaurav.kudesiya
- Apr 2nd, 2008
Hello,Your Question is not properly questioned...But the logic behind is Its simple the BINARY CODING...With changed symbol....1=> $ and 0=> *simply in BINARY we can write 4 as '100' and 3 as '11'
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Which set of data exhibits a highest standard deviation? a) 7,0,-7,7,0,-7 b) 7,-7,7,-7,7,-7
Please explain clearly
sanjeev yadav
- Jan 9th, 2008
More -sign , more sdalsosd= underroot of( (m-x1) * (m-x2) *.........* (m-xn)) ) / nm = (x1+x2+...xn ) / n
saleem ahamed syed
- Sep 24th, 2007
Ans:b 7,-7,7,-7,7,-7 its SD is 7Here i can t give u formulae: Bcoz of special characters like SQRT etc. please have below URL :http://en.wikipedia.org/wiki/Standard_deviation where u can find the procedure to find SD.Thanks,Saleem.
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A,B and C are 8 bit no's.they are as follows:A=11000101B=00110011C=00111010find ((A-C)UB).
THE OPTIONS ARE1)55 2)64 3)32 4)53ANSWER=55
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A car has run 10000 miles using 5 tyres interchangably,To have a equal wornout by all tyres how many miles each tyre should have run
subhrojitn
- Feb 10th, 2008
If you travel 10000 miles on 4 tyres total distance on each added up == 40000 miles.so 40000 miles on 5 tyres = 40000/5 miles=8000 miles
mahender v
- Oct 6th, 2007
each tire with 8000 miles2 22 2 reserve tire=0miles now change the tire,after 20...
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In the word ORGANISATION if we exchange first with the second, second with the third, third with fourth and so on. Till last then what will be the 10 letter from right?Explain clearly step by step
vamsi
- Oct 4th, 2007
ORGANISATION changes toRO? AG IN AS IT NOThen count the letters from?right means that is from (your right)Answer is A
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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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Editorial / Best Answer
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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Infosys Aptitude questions
In each questions below are given two statements followed by two conclusionsnumbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. read the conclusion and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.5. Statements : All bags are chalks. All...
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How to do the preparation for an aptitude
Which books i should prefer for the aptitude test of any company
pawansharma1987
- Mar 12th, 2009
Quantitative, Aptitude and Verbal & Non-Verbal Reasoning are best books always!
ersumit
- Jun 5th, 2008
You should follow Book named "Quantative aptitude" for practice in Mathematics & "verbal-non verbal reasoning" author R.S aggarwal.
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Seaplane
A ship leaves on a long voyage. When it is 18 miles from the shore, a seaplane, whose speed is 10 times that of the ship is sent to deliver mail. How far from the shore does the seaplane catch up with the ship?
souravray_88
- Feb 7th, 2010
Let speed of the ship be 1 mile/hr. then speed of the seaplane is 10 miles/hr. so, to travel 18 miles he seaplane requires 1.8 hrs. and in this 1.8 hrs. the ship has travelled 1.8 miles more. Therefore seaplane catch up with the ship at a distance of (18+1.8)=19.8=20 miles approx. from the shore.
buddycoolcd
- May 22nd, 2008
Ans is 20milesexplanation:the seaplane travels 10 miles when ship travels 1 mile.hence the seaplane travels 20 miles from shore when the ship is at 20 miles
Aptitude Interview Questions
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