Calculate the number 231
NUMBERMANIA: Calculate the number 231 using numbers [3, 5, 5, 7, 26, 156] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 0
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Neil ArnottBorn 15 May 1788; died 2 Mar 1874 at age 85.Scottish physician and scientist who invented a water-bed for the comfort of patients during a prolonged illness. He is also known for his invention of the economical Arnott stove, which he called a thermometer-stove with a self-regulating fire.« |