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Question

Observe the given rectangle

How many minimum numbers of rows or columns we need to add to make it a square.


  1. 1 row

  2. 1 column

  3. 2 columns

  4. 2 rows


Solution

The correct option is B

1 column


We can observe from the figure that the rectangle has 4 rows and 3 columns.

4×3=12 dots in it.

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

To make it a square we must add one column , i.e., we need to add 4 dots.

Now rows and columns both becomes 4, and the number of the balls becomes 4×4=42=16

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