Question

Jane has a 4 × 4 grid to be filled with colorful blocks. There are blocks of four different colors: red, green, blue, and yellow.

She arranges the four blocks in such a way that a block of the same color does not repeat itself in a column.
She arranges them in three rows as follows.
Find the pattern that will be followed in the $4^{th}$ row.

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

We know that a block of the same color should not repeat itself in a column.
$Incolumn1:$
A red-colored block will follow as blue-, green-, and yellow-colored blocks cannot be repeated.

$Incolumn2:$
A blue-colored block will follow as red-, yellow-, and green-colored blocks cannot be repeated.

$Incolumn3:$
A yellow-colored block will follow as green-, blue-, and red-colored blocks cannot be repeated.

$Incolumn4:$
A green-colored block will follow as yellow-, red-, and blue-colored blocks cannot be repeated.

The blocks in the $4^{th}$ row will appear as:

After arranging the blocks, the complete grid will appear as: