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A salesperson multiplied a number and got the answer 3, instead of that number divided by 3.What is the answer he actually has to get?
(1/3) *1 * 3 = 3, so number = 1Divided by 3 Answer: 1/3.
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Wind flows 160 miles in 330 min, for 80 miles how much time required.
115min
diptesh_mishra
- Jan 14th, 2006
I got teh answer as 165as 160 miles are covered in 330 min1 mile will be covered in 330/160 minHence 80 miles will be covered in 80*330/160 =165 min.
Harsha
- Oct 6th, 2005
=80*330/165=165 min
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Program Memory
The progam size is N. The memory occupied by the program is M=4000sqrt(N). If the program size is increased by 1%. Then what is the percentage increase in memory?
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What is the probability that 4 numbers selected from 1 to 40 are not consecutive
rajeswarisvgrnthn
- Aug 30th, 2010
From 1 to 40 there are 37 possible combinations of 4 consecutive numbers.
Total number of possible combinations= 40C4.
Probability of outcome to be consecutive = 37/(40C4)= 1/2470
Probability of outcome not to be consecutive = 1-(1/2470)= 2469/2470
tiru5796
- Jun 9th, 2009
Ans: (40-4+1)
C = no. of combinations
4
Total no. of chances= 37
Probability=37/37C4
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194 base 10= ___ base 5The base 5 representation of the decimal number 2048 is______
sham4u.poxy
- Jan 24th, 2010
194/5-> q=38, r=4;38/5-> q=7, r=3;7/5-> q=1, r=2;1/5-> q=0, r=1.Now reverse all the remenders...It will give -> 1234.
madhu
- Oct 12th, 2007
2048 to base 10:-2 ["add" the next (first) digit] 2 * 10 = 20 [multiply by the base] 20 + 0 = 20 [add the next digit] 20 * 10 = 200 [multiply by the base] 200 + 4 = 204 ...
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Circular Handshake
36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Find the size of the smallest set of people such that the rest have shaken hands with at least one person in the set.
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Two trees are there. One grows at 3/5 of the other in 4 years, total growth of trees is 8 ft. what growth will smaller tree will have in 2 years
< 2 ft.
jeet4u
- Jan 8th, 2010
X + 3/5x= 8 (4yrs)x=5 (larger tree)thus, smaller tree=3/5*5=3feet(in 4yrs)thus, in 2yrs, smaller tree =3/2=1.5 feet
vignes2005
- Jan 31st, 2007
Total height in 4 years=8 ftwe take it as x+ (3/5)x=8==>x(8/5)=8==>x=5tallest tree in 4y is 5ftsmallest tree is 3fthence in 2y which is 1.5 ft
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A plane moves from 9ËšN40ËšE to 9ËšN40ËšW. If the plane starts at 10 am and takes 8 hours to reach the destination, find the local arrival time
Udit
- May 9th, 2015
12:30
chandradeepika
- Jun 11th, 2008
40deg E to 40deg west. first add the deg 40+40=80. for 1 deg=4min so 80deg=80*4=320=5hrs20min arriving time=starting time+hrs of journey -5hrs20min. minus(-) is used becoz the direction is from east to west. so 10+8-5hrs20min=12.40pm
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11. Which of the following set of numbers has the highest Standard deviation?a) 1,0,1,0,1,0 b) -1, -1, -1, -1, -1, -1 c) 1,1,1,1,1,1 d) 1,1,0, -1,0, -1Tell me please how to slove this one
rama24
- Aug 13th, 2010
There is a mathematical formula for calculating standard deviation, but you don't need it for this question. StDev is a measurement of how much variation there is among different numbers in a seri...
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In 80 coins one coin is counterfiet what is minimum number of weighings to find out counterfiet coin?
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Editorial / Best Answer
Himanshu Ashwani- Member Since Oct-2008 | Oct 16th, 2008
The answer is 4
Divide Coins As 27 27 26
now weigh 27 and 27 keeping on both sides of pan u will get the less one
and if both sides are equal then group that has 26 coins has the coin that is counterfiet...
if u get 27 as result divide it in 3 groups
9 9 9
and weight it
keep two groups on two sides of pans and get the result of both sides are equal then the group 9 which was not kept on the pan has the coin which is counterfiet....
now 9 is divided as in 3 groups as
3 3 3 and weigh again and get result
now divide 3 as
1 1 1 and get the coin..
in start if u get answer as 26 divide as 3 groups
9 9 8
wiegh by keeping 9 on both sides and get answer if both are equal then 8 is ans
if 9 is ans again divide as 3 3 3 and then 1 1 1 and get coin...
if u get 8 then divide as 2 2 2 then 1 1 less one be yours coin...Aarthyanbu
- Dec 10th, 2009
It is about 5 times... First step to?split those 80 coins into 40. then again split 40 to 20. divide 20 into 10 and then 5 finally 2 at last find the minimum weight...
Himanshu Ashwani
- Oct 16th, 2008
The answer is 4Divide Coins As 27 27 26now weigh 27 and 27 keeping on both sides of pan u will get the less oneand if both sides are equal then group that has 26 coins has the coin that is counte...
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A building with height D shadow up to G. A neighbor building with what height shadows C feet. |----|----|----|----|----|----|----| A B C D E F G H
B Ft. or CD/G
Amrith
- Sep 30th, 2007
A building with height D feet is half of G feetSo obviously, a building with height half of C feet, which is B feet, would shadow C feet. I hope this is the logic
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In a mixture, R is 2 parts S is 1 part. In order to make S to 25% of the mixture, how much r is to be added?
One Part
velusara
- Nov 19th, 2010
Ans = R should be added with 50%If r is 2 parts S is 1 part i.e 2/1 = 1 or 1+1 = 2so if s increases by 25% of 1 then it is 1.25 + 1.25 = 2.5 that is r
Prashant202185
- Sep 24th, 2008
Since R= 2 parts and S = 1 parts so % of s = 1/3*100 = 33.33%Let x of r is added to make S to 25%then 1/(3+x)*100 = 25 => 75+25x=100 so x= 1 ans
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The cost of one pencil, two pens and four erasers is Rs.22 while the cost of five pencils, four pens and two erasers is Rs.32.How much will three pencils, three pens and three erasers cost?
Amit Kumar
- Sep 26th, 2018
15 rubbers cost 10.50.how many rubbers can be bought for 70? What will be the cost of 35 rubbers
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A car is filled with four and half gallons of oil for full round trip. Fuel is taken 1/4 gallon more in going than coming. What is the fuel consumed in coming up?
Before the trip, car is filled with = 4 ½ gallon of oil.Let ‘X’ be the quantity of fuel consumed for the trip in one direction The fuel consumed while going = X + ¼ The fuel consumed while coming = XTherefore, the fuel consumed for the trip = (X + ¼) + X = 4 ½ 2X + ¼ = 4 ½ => 2X = 4 ½ - ¼ => 2X = 4 ¼ => X= 2 1/8 . approxTherefore the fuel consumed while coming = 2.125 gallon
Nirmal
- Aug 7th, 2019
Total fuel=4.5 gallons
let amount of fuel for coming=x so a.t.q amonut of fuel for going = x+ x/4=5x/4.
so 5x/4+xsriram_v
- Aug 11th, 2010
2.125 is not the right answer we need to add 1/4 to that to get the fuel consumed while coming upthe right ans is 2.125+0.25=2.375
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A ship started from port and moving with I miles per hour and another ship started from L and moving with H miles per hour. At which place these two ships meet? |----|----|----|----|----|----| port G H I J K L
Answer is between I and J and close to J or (L*I*H)/(H+I)
gkrishna990
- Jul 1st, 2010
Well ship A moves at 2blks per hr and ship B moves at 4 blks per hr..assuming they move towards each we should have the answer between h and i. Lets take one hr time, ship A will be at I and B at...
Rashi
- Oct 12th, 2007
If they start in opposite direction they will meet b/w J n K, and close to J.The Speed of 1st ship is I ie 2 blocks/hr n the speed of j is 1block/hr ie H. see the distence 4m the port.....
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Jalia is twice older than qurban. If Jalia was 4 years younger, qurban was 3 years older, the diff. between their ages is 12 years
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TCS Quantitative Aptitude Questions
1. My flight takes of at 2am from a place at 18N 10E and landed 10 Hrs later at a place with coordinates 36N70W. What is the local time when my plane landed.a) 6:00 am b) 6:40am c)7:40 d)7:00 e)8:00 2.in 80 coins one coin is counterfiet what is minimum number of weighings to find out counterfiet coin ?3.Three men goes to a hotel to stay ,the clerk says $30 per room/day so all the three plans to stay...
Murugesan_s
- Jan 27th, 2010
If it is east to west we should add the degrees and convert that to min. then should subtract with the total hrs given. If it is west to east do it inverse manner.In this problem 70+10=80;80*4 min=320 min=5 hr 20 minthen total hrs given=10 hrs=>10 hr-5 hr 20 min=6 hr 40 min
avin2v2
- Jul 23rd, 2008
3 since in 2 coins only 1 weighing is required 3 also 1 if 2 coins r identical then third coin is defective or else one of the 2 is defective 4,5,6,7,8 needs 1 test 9 requires 2 tests 27 requires...
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A 100100011b 000110010c 100000110then find a-(buc) or au(b-c)
sagarpdy
- Jun 26th, 2009
It is a kind of set representationA={0,1,5,8}likelyhence b U c=100110110={1,2,4,5,8} ...Alt logical orA-(bUc)= {0}...normal set differenceans=000000001
Quantitative Aptitude Questions
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Ans