IIT JEE , AIEEE Forum - Mathematics , Algebra - what is PoE(process of elimination) technique

sourab_MCA

i got this term from net just now. it can be used in objective type questions to solve faster.i wanna know what is it. an example would be appreciated

thnx

ashish_banga

Let?s first look at the five answer choices for every Data Sufficiency question:

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked

BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient

EACH statement ALONE is sufficient to answer the question asked

Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

These five answer choices suggest the following process of elimination:

Consider statement (1) by itself. If you can answer the question based on (1) alone, eliminate (B), (C) and (E) as viable choices.

Consider statement (2) by itself. If you can answer the question based on (2) alone, eliminate (A), (C) and (E) as viable choices.

If you were able to answer the question based on (1) alone and based on (2) alone, the correct response is (D).

If you were not able to answer the question based on either statement alone, the correct response must be either (C) or (E).

As you can see, built into the Data Sufficiency format is the opportunity to make reasoned guesses when you?re in a time crunch or have trouble analyzing one of the two numbers statements.

K4FECN6

Consider the example:

The lines whose equations are x+y=1,2x-y=3,2x+3y=6 & 3x+4y=5
(a) form a trapezium
(b) form a rectangle
(c) are concurrent
(d) form a quadrilateral

Since no 2 pairs of lines are parallel,the first 2 options are eliminated.Now,if the point of a pair of lines is the same as the point of intersection of the other 2 lines
then the 4 lines are concurrent,otherwise the lines form a quadrilateral.In this case
U will find that option (d) is the most appropriate.

This is known as process of elimination.

Hope U got it now...

Don't forget to rate me...

sourab_MCA

thnx mate i rated u. :)

pottermania1990

for,ex some complex trig, eqn. is given and ur asked to find the value of sec x

options are, 2 b)0 c)1/2 d )1/4

so u can eliminate the last three options since u noe the domain of secx

Ronaldooo

@pottermania
u think iit paper setters are such fools to give such options????

sugeet

WILL it be USEFUL coz I don`t think the options may may jus lat

,and is it all ways , why not c) etc

it sounds so odd

Ask & Discuss Questions with Community & Experts