Question

David brought 50 tiny square bricks to build a square wall using the bricks but he could only use a maximum of bricks to build the square wall.

• A. 45
• B. 36
• C. 50
• D. 49

Answer 1

The correct option is D 49

49 bricks can be arranged as

$7\times 7$ = 49

$\therefore$ David could build the square wall using a maximum of 49 bricks out of the 50 bricks he had.