# Straight line sum - math puzzle

Correct the equation above by inserting one straight line.

# Let's go for a hike - math puzzle

A hiker walked for two days. On the second day the hiker walked 2 hours longer and at an average speed 1 mph faster than he walked on the first day. If during the two days he walked a total of 64 miles and spent a total of 18 hours walking, what was his average speed on the first day?

# Tic-tac-toe - logic puzzle

In Greenwich Village, tic-tac-toe is played in an atypical way. At
each turn a player marks as many squares as he wishes provided they are
in the same vertical or horizontal row (they need not be adjacent). The
winner is the one who marks the last square.

Which player has the advantage, and what strategy should he employ?

Which player has the advantage, and what strategy should he employ?