Multiple choice general knowledge Centigrade and Fahrenheit gives same reading at Minus 40 Deg Minus 32 Deg Minus 273 Deg Minus 100 Deg Reveal answer Fill a bubble to check yourself A Correct answer Explanation The Celsius and Fahrenheit scales intersect at exactly -40 degrees. -40°C = -40°F. This is the only temperature where both scales give the same reading.