On the Casio fx-83MS calculator, the indices button is typically labeled as "nCr" or "nPr," which can be found on the keypad. It is located above the "x²" button, and you can access it by pressing the "SHIFT" key first. The indices function allows you to perform calculations related to combinations and permutations.
Two methods on a Casio fx-83MS #1 ; press 'shift' then 'x^(3). Then the number #Then equals #2 ; Press '/' Then '1/3' or 0.3333333333...... Equals NB The power of '1/3(0.3333....) means the 'cube root'.
Please note that an expression like log 25.65 is ambiguous, since no base is specified. In this case, either base 10 or base e might be assumed, depending on the context.In some calculators, especially older ones, you would press the number 25.65, then press one of the log keys. There is usually one for base 10, and one for base e. In newer calculators, you press the one of the log keys first, then the number, then something like enter.
I'm not sure what you mean by `83ms' but polar bears can't run at any speed for ten hours. They can run at up to about 25mph for short distances but they're big and well-insulated so they overheat quickly and can't maintain that sort of speed.