\(17^5+24^4-13^{21}\)
\(=17^4\times17+\left(.....6\right)-\left(13^2\right)^{10}\times13\)
\(=\left(.....1\right)\times17+\left(.....6\right)-\left(.....9\right)^{10}\times13\)
\(=\left(.....7\right)+\left(......6\right)-\left(.....1\right)\times13\)
\(=\left(.....3\right)-\left(.....3\right)\)
\(=\left(.....0\right)\)
Vậy \(17^5+24^4-13^{21}⋮10\)
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