Question

Suppose you have a 5x5 checkerboard with 25 squares. You put one penny on the first square, then 2 pennies on the next square then 2 pennies on the third square and so on until there are pennies on all the squares. How many pennies are on the 25th square?

Answer 1

I think the answer is 2.

Explanation:

I couldn't determine the pattern since you placed 2 pennies on the other squares other than the first one.