Numbers - Unit digit

SOURCE:COMPETITION
Number of Problems: 2. : (Book)

1.

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What is the tens digit in the sum $7!+8!+9!+...+2006!$

$mathrm{(A) } 1qquad mathrm{(B) } 3qquad mathrm{(C) } 4qquad mathrm{(D) } 6qquad mathrm{(E) } 9$

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2.

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What is the hundreds digit of $2011^{2011}?$

$extbf{(A) } 1 qquad extbf{(B) } 4 qquad extbf{(C) }5 qquad extbf{(D) } 6 qquad extbf{(E) } 9$

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