Calculate the number 840
NUMBERMANIA: Calculate the number 840 using numbers [8, 6, 8, 5, 99, 164] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 2
#brainteasers #math #numbermania
Photocell operated doorsIn 1931, installation was completed on the first commercial doors operated by photoelectric cell. A magic eye controlled automated swinging doors between the kitchen and main dining room of Wilcox's Pier Restaurant in West Haven, Conn. |