An item cost $320 before tax and sales tax is $9.60 fine the sales tax rate. what is the answer as a percentage?
1 answer:
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Answer:
there are only 4 whole numbers whose squares and cubes have the same number of digits.
Explanations:
let 0, 1, 2 and 4∈W (where W is a whole number), then
,
,
,
,
,
,
,
.
You can see from the above that only four whole numbers are there whose squares and cubes have the same number of digits