Education and Career Forum

I need some short cuts to solve quantitative aptitude question

can you please send

thanks

there is no shortcut of success . because practice makes a man perfect .
i will suggets you 2 books of aptitude i.e.
1) R S AGGARWAL
2) ABHIJIT GUHA
also , i am attaching some study materials

I need some short cuts and easy tricks to solve quantitative aptitude questions

can you please send

thanks

i suggest u to collect the T.I.M.E institute material from any of ur friends.....which provides wide variety of shortcuts...whch help us to solve problms in a short time...

i suggesst u to collect T.I.M.E institute material from ur friends who have attended for I.CET or CAT coaching which contains wide variety of shortcuts which help us to solve problms in a shorttime

i suggest u to collect material of T.I.M.E institute from ur friends who have attended for CAT or I.CET coaching......which contains wide variety of shortcuts..

how many days needed to work for solving aptitude questions

sir i cant afford to go for cat coachng.i m gng to prepare at home.sugst frm where to?i have time books and quantum cat.any book u sugst fr english.i have rs agrwal apti and verbal nd non verbal also.m bit good at apti also.do reply

Some children goto ice-cream shop. 9 flavours are available there.
Each child takes a cone with two different flavours. No two children
take same combination and they have taken all such possible
combinations. How many children went to ice cream shop?

thanx to this website who helped me in getting out of my problems with d shortcuts specially in aptit nd reasoning

thanks a lot for the attachments..its very usefull..

thanks for the attachments its very usefull and truely informative..

thanks for the attachments,it is very usefull..

Originally Posted by renumurali

I need some short cuts to solve quantitative aptitude question

You can find many such shortcuts to make your calculations easy and which will save your precious time in exams..such questions are also asked for MBA so take up the study material of a good MBA coaching institute and read the book on numerical problems..you will find shortcuts for various things like..
for multiplication
for squaring
for factorials
and many many more things..i am sure this will help you..

1. A number is divisible by 2, if its unit’s place digit is 0, 2, 4, or 8
2. A number is divisible by 3, if the sum of its digits is divisible by 3
3. A number is divisible by 4, if the number formed by its last two digits is divisible by 4
4. A number is divisible by 8, if the number formed by its last three digits is divisible by 8
5. A number is divisible by 9, if the sum of its digits is divisible by 9
6. A number is divisible by 11, if, starting from the RHS,
(Sum of its digits at the odd place) – (Sum of its digits at even place) is equal to 0 or 11x
7. (a + b)2 = a2 + 2ab + b2
8. (a - b)2 = a2 - 2ab + b2
9. (a + b)2 - (a - b)2 = 4ab
10. (a + b)2 + (a - b)2 = 2(a2 + b2)
11. (a2 – b2) = (a + b)(a - b)
12. (a3 + b3) = (a + b)(a2 - ab + b2)
13. (a3 – b3) = (a - b)(a2 + ab + b2)
14. Results on Division:
Dividend = Quotient × Divisor + Remainder
15. An Arithmetic Progression (A. P.) with first term ‘a’ and Common Difference ‘d’ is given
by:
[a], [(a + d)], [(a + 2d)], … … …, [a + (n - 1)d]
nth term, Tn = a + (n - 1)d
Sum of first ‘n’ terms, Sn
= n/2 (First Term + Last Term)
16. A Geometric Progression (G. P.) with first term ‘a’ and Common Ratio ‘r’ is given by:
a, ar, ar2, ar3, … … …, arn-1
nth term, Tn = arn-1
Sum of first ‘n’ terms Sn = [a(1 - rn)] / [1 - r]
17. (1 + 2 + 3 + … … … + n) = [n(n + 1)] / 2
18. (12 + 22 + 32 + … … … + n2) = [n(n + 1)(2n + 1)] / 6
19. (13 + 23 + 33 + … … … + n3) = [n2(n + 1)2] / 4
114 Handy Formulae for Quantitative Aptitude Problems
Author: Sagar Sonker
Page 3 of 12
Copyright © 2006 www.sonker.com
H.C.F & L.C.M of Numbers
20. Product of two numbers = Their H. C. F. × Their L. C. M.
Surds & Indices
21. am × an = a(m + n)
22. am / an = a(m - n)
23. (ab)m = ambm
24. (a / b)m = an / bn
25. a0 = 1
26. = a1/n
27. = (a1/n)n
= a
28. =
29. = /
30. ( )m =
31. =
Percentage
32. To express x% as a fraction, we have x% = x / 100
33. To express a / b as a percent, we have a / b = (a / b × 100) %
34. If ‘A’ is R% more than ‘B’, then ‘B’ is less than ‘A’ by
OR
If the price of a commodity increases by R%, then the reduction in consumption, not
to increase the expenditure is
{100R / [100 + R] } %
35. If ‘A’ is R% less than ‘B’, then ‘B’ is more than ‘A’ by
OR
If the price of a commodity decreases by R%, then the increase in consumption, not to
increase the expenditure is
{100R / [100 - R] } %
36. If the population of a town is ‘P’ in a year, then its population after ‘N’ years is
P (1 + R/100)N
114 Handy Formulae for Quantitative Aptitude Problems
Author: Sagar Sonker
Page 4 of 12
Copyright © 2006 www.sonker.com
37. If the population of a town is ‘P’ in a year, then its population ‘N’ years ago is
P / [(1 + R/100)N]
Profit & Loss
38. If the value of a machine is ‘P’ in a year, then its value after ‘N’ years at a depreciation of
‘R’ p.c.p.a is
P (1 - R/100)N
39. If the value of a machine is ‘P’ in a year, then its value ‘N’ years ago at a depreciation of
‘R’ p.c.p.a is
P / [(1 - R/100)N]
40. Selling Price = [(100 + Gain%) × Cost Price] / 100
= [(100 - Loss%) × Cost Price] / 100
Ratio & Proportion
41. The equality of two ratios is called a proportion. If a : b = c : d, we write a : b :: c : d and
we say that a, b, c, d are in proportion.
In a proportion, the first and fourth terms are known as extremes, while the second and
third are known as means.
42. Product of extremes = Product of means
43. Mean proportion between a and b is
44. The compounded ratio of the ratios (a : b), (c : d), (e : f) is (ace : bdf)
45. a2 : b2 is a duplicate ratio of a : b
46. : is a sub-duplicate ration of a : b
47. a3 : b3 is a triplicate ratio of a : b
48. a1/3 : b1/3 is a sub-triplicate ratio of a : b
49. If a / b = c / d, then, (a + b) / b = (c + d) / d, which is called the componendo.
50. If a / b = c / d, then, (a - b) / b = (c - d) / d, which is called the dividendo.
51. If a / b = c / d, then, (a + b) / (a - b) = (c + d) / (c - d), which is called the componendo &
dividendo.
52. Variation: We say that x is directly proportional to y if x = ky for some constant k and we
write, x α y.
53. Also, we say that x is inversely proportional to y if x = k / y for some constant k and we
write x α 1 / y.
114 Handy Formulae for Quantitative Aptitude Problems
Author: Sagar Sonker
Page 5 of 12
Copyright © 2006 www.sonker.com
Partnership
54. If a number of partners have invested in a business and it has a profit, then
Share Of Partner = (Total_Profit × Part_Share / Total_Share)
Chain Rule
55. The cost of articles is directly proportional to the number of articles.
56. The work done is directly proportional to the number of men working at it.
57. The time (number of days) required to complete a job is inversely proportional to the
number of hours per day allocated to the job.
58. Time taken to cover a distance is inversely proportional to the speed of the car.
Time & Work
59. If A can do a piece of work in n days, then A’s 1 day’s work = 1/n.
60. If A’s 1 day’s work = 1/n, then A can finish the work in n days.
61. If A is thrice as good a workman as B, then:
Ratio of work done by A and B = 3 : 1,
Ratio of times taken by A & B to finish a work = 1 : 3
Pipes & Cisterns
62. If a pipe can fill a tank in ‘x’ hours and another pipe can empty the full tank in ‘y’ hours
(where y > x), then on opening both the pipes, the net part of the tank filled in 1 hour is
(1/x – 1/y)
Time And Distance
63. Suppose a man covers a distance at ‘x’ kmph and an equal distance at ‘y’ kmph, then
average speed during his whole journey is
[2xy / (x + y)] kmph
Trains
64. Lengths of trains are ‘x’ km and ‘y’ km, moving at ‘u’ kmph and ‘v’ kmph (where, u > v) in
the same direction, then the time taken y the over-taker train to cross the slower train is
[(x + y) / (u - v)] hrs
65. Time taken to cross each other is
[(x + y) / (u + v)] hrs
66. If two trains start at the same time from two points A and B towards each other and after
crossing they take a and b hours in reaching B and A respectively.
114 Handy Formulae for Quantitative Aptitude Problems
Author: Sagar Sonker
Page 6 of 12
Copyright © 2006 www.sonker.com
Then, A’s speed : B’s speed = ( : ).
67. x kmph = (x × 5/18) m/sec.
68. y metres/sec = (y × 18/5) km/hr.
Boats & Streams
69. If the speed of a boat in still water is u km/hr and the speed of the stream is v hm/hr,
then:
Speed downstream = (u + v) km/hr.
Speed upstream = (u - v) km/hr.
70. If the speed downstream is a km/hr and the speed upstream is b km/hr, then:
Speed in still water = ½ (a + b) km/hr.
Rate of stream = ½ (a - b) km/hr.

hello friend,

there is no such shortcut to achieve goal, and like success and for problem also..
however to solve it ,
you must slove more problm as possible , then you can get your problem solving ability and, the most thing is time management..
so keep in mind these 2 things:you can solve it quickly...
you ll get your own short cut also.


good Luck~~~~

Originally Posted by greatindiamahesh502

i suggest u to collect material of T.I.M.E institute from ur friends who have attended for CAT or I.CET coaching......which contains wide variety of shortcuts..

pl contact ur nearby ims center

can somebody help in how to make calculations very fast are threre any shorcuts for that?
like 2/3 6*8-9 other than bodmas

SIR PLZ SEND ME THE SHORTCUT OF QUANTI....

there is no shortcut of success . because practice makes a man perfect .
i will suggets you 2 books of aptitude i.e.
1) R S AGGARWAL
2) ABHIJIT GUHA

I'm not having any friend who studies in TIME institute to get TIME study material . Can some one help me to get those material to learn shortcuts for aptitude. Thanks in advance

137 276=435 then 731 672=?????