幫我再計數,plz!!!!!
1. The Rubik's Cube(扭計骰) shown in the figure was once a very popular puzzle. By shifting
the faces of the small cubes, the combination of the squares on each surface changes, and
there are as 43,252,003,274,489,856,000 combinations.
(a) Express this number in scientific notation correct to 4 significant figures.
(b) Suppose a computer can identify one million combinations in one second. How long will it
take to identify all the combinations ?
(Give the answer correct to the nearest hundred thousand years.)
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