Question

A rectangle of height 100 squares and width 200 squares is drawn on a graph paper. It is colored square by square from top left corner and moving across in a spiral turning right whenever a side of the rectangle or a colored square is reached. Which square is colored last (give its row and column numbers – the bottom right square is on row 100 and column 200)

Answer 1

Answer:

R51C50

Row 51 & Column 50

Step-by-step explanation:

Let say Call  top left corner = R1C1

Rows = 100  Coulmn = 200

& Bottom right Square = R100C200

We start from R1C1  and go upto  R1C200

then turn & go upto R100C200

then turn & go upto R100C1

then turn & go upto  R2C1  

Repeating this Process

we will reach Finally R51C50

Last to be colured row 51 & Colum 50