Interventional radiology. Interventional radiology (IR), sometimes known as vascular and interventional radiology (VIR), is a medical sub-specialty which provides minimally invasive image-guided diagnosis and treatment of disease.
Report Abuse. 3*(2)^(1/3) In words, 3 times the third root of 2. Divide 54 by 27 (which is 3 cubed), giving 2 inside the radical and 3 outside.... ... Â· 5 years ago.*(2)^(1/3) In words, 3 times the third root of 2. Divide 54 by 27 (which is 3 cubed), giving 2 inside the radical and 3 outside. ... ... Â· 5 years ago.
Â· just now. Report Abuse. Theoretically there are 54!/(9!*9!*9!*9!*9!*9!) = 1.10^38 combinations of 54 squares of a 3x3x3 cube. Rubik's cube shows only 8!*3^8*12!*2^12 = 519,024,039,293,878,272,000 =5.19^20 combinations of the 54 squares, if you take apart the cube and put it together.