Question

What is the missing number in the given sudoku?

$\begin{array}{ccc}2& 1& 3\\ 1& 3& 2\\ 3& 2& ?\end{array}$

• A. 1

Answer 1

The correct option is A 1
In a soduku. the sum of numbers in each row or column must be equal to the sum of numbers in other row or column.
Consider, the first row, here the sum of the numbers is 6, in second row it is also 6, in columns also the sum of the numbers in first and second is 6.

$\therefore$ the sum of all the numbers present in the third row must also be six. Let's assume the unknown value as $x$.

$\Rightarrow 3+2+x=6$
$\Rightarrow x=6-3-2$
$\Rightarrow x=1$