Question

Observe the rectangle given below

If we have to make a square by rearranging these dots, then what is the minimum number of dots that should be removed.

• A. 6
• B. 4
• C. 2
• D. 8

Answer 1

The correct option is C

2

We have rectangle of side 6 and 3

Total number of dots $=6\times 3=18$

Now, 18 can be written as

$18=16+2$

$18=4^2+2$

So, we can get square of side 4 and 2 dots needs to be removed.