In this article i will be explaining how to use the trick...all of us know that in bank exam we will not be given question where simple addition, subtraction is required but a combination of both can be there...
so without wasting any time lets start with an example....
THE example i am taking here are the previous year question from different exams...
Friends today i am giving to the the ultimate weapon for quantitative section but you have to practice a loy when, where and how this trick can be used.. .
the trick is very very simple to understand..
NOTE- always consider the value of 9 as 0 (zero).
here it goes for addition..
Q. 879 + 6583 = ? ( 7462)
now every body can solve this question but in bank exam its not only about solving the question, its about solving it in the minimum possible time...
step. 1. simply add the DIGIT in the question till they convert into single digit....
8+7+9 + 6+5+8+3 =
15 ( 9=0) + 22
6 + 4 = 10 or 1
i have taken only 2 numbers in the example you can apply this trick for N numbers ....
so simply mark the OPTION in the exam by calculating the digits. the beauty of this trick is that it applies to subtraction and multiplication also...
Eg. 6587 - 879 = 5708
8 - 6 = 2 ( 20= 2+0= 2)
Eg. multiply 5674 X 345 = if u will solve this by my earlier trick , then also its going to take some time but now it can be solved in fraction of seconds...
5 + 6+7+4 X 3+4+5 = 1957530 ( add it u will get 3 as end result)
4 X 3 = 12 0r 3
The trick can also be applied in combination of addition- subtraction and multiply divide..which i will be telling in next article and trick for solving syllogism.....
NOTE- this trick is very simple therefore all you have to do is know when, where and how to implement it.
this trick can be used in almost all question of math section in bank exam and by now you have got an idea how much time you can save from this trick...
good luck.......
do give your inputs
1. solve 5124 - 829 + 731 - 435 = ? ( 4591)
solution by trick = 3 - 1 + 2 - 3
= 5 - 4 = 1 ( ans 4+5+9+1 = 1)
2. solve 10789 +3946 - 2310 -1223 = ? ( 11202)
solution = 7 + 4 - 6 - 8= -3 (minus3)
now here is a catch in the trick...
whenever your answer in the trick comes negative and the option are positive then subtract only the number from 9...
so for above question 9 - 3 = 6 final answer...... ( 1+1+2+0+2 = 6)
3. 3876 X 285 -17620 = ? + 5487 ( no doubt without trick more then 1 min require to solve this question)
option are A. 1171355 B. 1081553
lets solve it by trick...
u need presence of mind for cheating therefore from the next time when you use this trick try to find the last digit of the answer
rewriting the question with a change 3876 X 285 -17620 - 5487 = ?
As in this question when we multiply 6 X5 we get last digit as 0 (ZERO) and when we further subtract (17620) we again get 0( zero). and then in the last subtraction ( 5487) we get last digit as 3
now apply the trick and get sure shot answer...
6 X 6 - 7 - 6 = -13 = -4 ( MINUS 4 = 5) remember something?
now look at the options both have sum digit of 5 but option B ends with 3 having sum digit 5 therefore it is the correct answer.....
4. -56 X 29 + 435 = ?
options are A. -706440 B. -1189 C. -1860
apply the trick ..
-2 X 2 + 3 = -1 (minus1) therefore the answer option B (-1189)
now as you can see in this question i have not subtracted the negative value from 9.... why?
because the option given are already in negative value... if they were in positive then only you have to subtract from 9 as in the earlier case.......
5. (24.2)^2+ ( 46.8) ^2- ( 37.2) ^2= ? + 1542.72
option are
A. 150.68
B. 160.28
C. 155.42
D. NONE OF THESE
honestly tell me how many candidates are going to attempt this question provided that you do not know this trick??
a look on question tell us how much time its gonna take to solve...
but with this trick... lets see.....
(8 X 8) + (9X9) - (3X3) = ? + 3
64 + 0 - 0 =? + 3
1- 3 = ? ( minus2) remember something ....
answer will be none of these ( option are positive so you have to subtract from 9)