Question

Observe the given rectangle

How many minimum extra rows or columns, we need to remove to make it a square.

• A. 1 column
• B. 1 row
• C. 2 columns
• D. 2 rows

Answer 1

Answer: (A)

1 column

We can observe from the figure that the rectangle has $5\times 4=20\text{dots}$

For a square, we must have an equal number of rows and columns.

To make it a square, we need to remove one column, i.e., we need to remove one column.