If the sequence \( \left(a_{n}\right) \) is defined by \( a_{1}=2, a_{n+1}=a_{n}+ \) \( 2 \mathr...

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If the sequence \( \left(a_{n}\right) \) is defined by \( a_{1}=2, a_{n+1}=a_{n}+ \) \( 2 \mathrm{n}(\mathrm{n} \geq 1) \), the value of \( \mathrm{a}_{100} \) is
a. 9912
b 9902
c. 9908
d. 10100
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