Q: Did Gauss have a normal brain structure?
A: no
Explanation: When Gauss died in 1855, his brain was preserved for study. Dr. Rudolf Wagner, who studied the brain, found the mass to be slightly above average, and found highly developed convolutions on the brain.

Q: Would someone with back pain enjoy picking strawberries?
A: no
Explanation: Back pain may be worsened by repeated bending at the waist. Strawberries grow very close to the ground.

Q: Is the letter D influenced by the shape of ancient doors?
A:
yes
Explanation: D is the fourth letter of the Latin alphabet. D is a descendent of the ancient Phoenician Dalet. Dalet was represented by a glyph of a door.