Question

A stone is dropped at random on a chessboard and it lands on a square. What is the probability that the square is a white square?

• A. $\frac{1}{3}$
• B. $\frac{1}{2}$
• C. $\frac{1}{4}$
• D. $\frac{3}{4}$

Answer 1

The correct option is B $\frac{1}{2}$

Number of black squares in a chessboard = 32
Number of white squares in a chessboard = 32
Total number of squares = 64
Probability (stone lands on a white square ) = $\frac{32}{64}$ = $\frac{1}{2}$