Numerical Logic
Logical Reasoning

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Common Information

There are two grids given below with the letters $a$ to $h$ filled in place of some natural numbers. The numbers have to be placed in both the grids such that the sum of numbers in each row or column of any grid is always an odd number less than 4 and the numbers in each row and column should not be same. Also $d$ is always equal to $e$.

Answer the following questions based on the above information.

Table below can be scrolled horizontally

a b
c d

Table below can be scrolled horizontally

e f
g h
Q.

Common Information Question: 1/2

If $a = 1$ then $h = ?$

 A.

1

 B.

2

 C.

3

 D.

4

 E.

5

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Solution:
Option(A) is correct

From the conditions given for the number arrangement in the grid, we can say that the sum of numbers in each row and column has to be 3.

 The numbers to be filled in are 1 or 2. So, if $a = 1$, $b$ has to be 2 and $d$ has to be 1. So, $e$ has to be 1 (since $d$ is always equal to $e$).

$f = 2$ and $h = 1$

The grids will look like this:

Table below can be scrolled horizontally

1 2
2 1

Table below can be scrolled horizontally

1 2
2 1

Hence option A is the correct choice.


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