Question 22
As these "buildings" grow, more blocks are needed. Build the buildings. Predict the number of blocks needed for the 60th building.

Editorial note: Use the conventional square-number continuation of the pictured counts, with no extra hidden blocks. The finite examples alone do not determine a unique rule.

Editorial note: Use the conventional square-number continuation of the pictured counts, with no extra hidden blocks. The finite examples alone do not determine a unique rule.