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. 4
• B. 1
• C. 3
• D. 2

Answer 1

The correct option is B

1

We have the rectangle of sides $5\times 2$

Total number of dots $=5\times 2=10$

Now, 10 can be written as

$10=3^2+1$

So, we can get square of side 4 and 1 dot needs to be removed.