Mom, Dad, and two kids have come to a river, and they find a boat. It is small and can only carry one adult or two kids at a time. Both kids are good rowers, but how can the whole family reach the other side of the river?

After a long way, a truck driver ends up in front of a tunnel. He can not get through without severely damaging his truck, because the tunnel has a height of 3.00 meters, while his truck has a height of 3.01 meters. The driver would like to pass the tunnel because the other way will take him at least 1 hours. Suddenly he gets a great idea, he immediately starts doing some things and after 10 minutes he is back on track on the other side of the tunnel. What was the great idea of the truck driver?

Out of how many F's does the following sentence consist?

FINISHED FILES ARE THE RE-
SULTS OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH THE
EXPERIENCE OF YEARS