# Last digit problem - 2

**Number Theory**Level 3

What will be the last digit of the following sum ?

N^{201} + N^{202} + N^{203} + ... +N^{4 × n}

Where n is a natural number such that n ≥ 51 and N is a natural number such that N ∉ {1,6,11,16,21, ...}

What will be the last digit of the following sum ?

N^{201} + N^{202} + N^{203} + ... +N^{4 × n}

Where n is a natural number such that n ≥ 51 and N is a natural number such that N ∉ {1,6,11,16,21, ...}

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