Context: The Vikings' eleventh game was an NFC duel with the Redskins at FedExField. In the 1st quarter the Vikings trailed early as QB Donovan McNabb completed a 10-yard TD pass to TE Fred Davis. They replied as RB Adrian Peterson got a 5-yard TD run. The Vikings pulled ahead with RB Toby Gerhart getting a 5-yard TD run, followed by kicker Ryan Longwell nailing a 31-yard field goal. The Redskins tried to come back, but only came away with 40-yard and a 42-yard field goals from kicker Graham Gano, giving the Vikings the win.

Question: How many yards was the longest field goal?

Answer:
42