Question

Camille placed blocks on a table in rows and columns. All the rows and columns had the same

number of blocks in them and formed a square. Which could be the total number of blocks
Camille placed on the table?
A. 111 blocks
B. 121 blocks
C. 181 blocks
D. 222 blocks

Answer 1

If all the rows and columns have the some number of blocks, then

(number of blocks in each row) times (number of blocks in each column)

must be a perfect square.

'121' is the only choice on the list that's a perfect square. It's the square of 11.