Hello students! Welcome to DILR Concept 1

Concept name: Entry matching

Concept explanation: In such questions, we apply constraints point by point to form a matrix. Rules of selection and are applied condition by condition to fill up entries in the matrix.

Sample set: Read the information given below and answer the questions that follows:

A, B, C, D and E are five cities of which three are Agricultural cities, two are Theatre cities, one Tourist place and three cities have Lake. Here is some additional information:

1. Tourist place has Lake but not Theatre.
2. The Agricultural cities with Lake do not have Theatre.
3. Two Agricultural cities have Lake & C and D are not Agricultural cities.
4. D is not a Theatre city. No Theatre city has Lake and B is a Theatre city.
5. None of the Agricultural cities is a Tourist place.
6. D is a Tourist place and E has Lake.

 

1. Which two cities have Theatre?                                                                                                                                  a.  B and D          b. D and C            c. D and E             d. A and C            e. None of these

2. Which Agricultural city does not have Lake?                                                                                                               a. a. A                 B        c              c. C                         d. D                        e. E

Table structure: general conditions of total filled.

	A	B	C	D	E	Total
Theatre						2
Lake						3
Agricultural						3
Tourist						1

 

Table filling: Point 6 and point 1

	A	B	C	D	E	Total
Theatre				0		2
Lake				1	1	3
Agricultural						3
Tourist	0	0	0	1	0	1

 

Table filling: Point 3,5 and 2

	A	B	C	D	E	Total
Theatre				0	0	2
Lake				1	1	3
Agricultural	1	1	0	0	1	3
Tourist	0	0	0	1	0	1

 

Table filling: Point 4 and 3,2 again

	A	B	C	D	E	Total
Theatre	0	1	1	0	0	2
Lake	1	0	0	1	1	3
Agricultural	1	1	0	0	1	3
Tourist	0	0	0	1	0	1

 

Solution:

Q1. B and C – e. None of these

Q2. B – b

Level of difficulty: Easy

Hope you understood applying constraints and matching entries in a table. 

Happy learning!

Rahul Sir

CAT Coach

Quora profile: https://www.quora.com/profile/Rahul-Anand-51