B.Stat & B.Math 2022 - Q1
Source: Indian Statistical Institute (ISI) - B.Stat & B.Math Entrance 2022
May 8, 2022
isiIndian Statistical Institute2022combinatorics
Problem Statement
Consider a board having 2 rows and columns. Thus there are cells in the board. Each cell is to be filled in by or .[*] In how many ways can this be done such that each row sum and each column sum is even?[*] In how many ways can this be done such that each row sum and each column sum is odd?