Insider tips, exam hacks, & guides
Practice sets & materials
Explore top colleges & admissions
We’d love to hear your feedback
Tutorials & guides to help you
Refer to the data below and answer the ques ons that follow.
A 4 × 4 grid has 4 smaller grids of 2 × 2 like shown in the diagram in below in bold.
All the cells in the grid are dis nct and are referred to by the number of the row and the column they belong to. For example, the top right cell is referred to as C because it is in the first row and the fourth column.
Numbers from 1 to 4 are to be filled in the grid, such that each row and each column has each number exactly once. Also, each small grid of 2 × 2 also has each number exactly once.