Calculate the number 489
NUMBERMANIA: Calculate the number 489 using numbers [9, 9, 4, 5, 97, 992] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 4
#brainteasers #math #numbermania
Chenille manufacturing machine patentedIn 1863, the first U.S. patent for a chenille manufacturing machine was issued to William Canter of New York City, who made the first such machine in the U.S. (No. 37,415) |