The digit at the unit place of sum (1!)2+(2!)2+(3!)2+(4!)2+……+(2008!)2 is

Let S=1+4+36+576+….+(2008!)2=617+all other terms end with ‘O’ the digit at unit place = 7

The digit at the unit place of sum (1!)2+(2!)2+(3!)2+(4!)2+……+(2008!)2 is

Let S=1+4+36+576+….+(2008!)2=617+all other terms end with ‘O’ the digit at unit place = 7

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The digit at the unit place of sum $(1!)^{2} + (2!)^{2} + (3!)^{2} + (4!)^{2} + \dots \dots + (2008!)^{2}$
is

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answer is C.

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$Let S = 1 + 4 + 36 + 576 + \dots . + (2008!)^{2}$

$= 617 +$ all other terms end with ‘O’ the digit at unit place = 7

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The digit at the unit place of sum (1!)2+(2!)2+(3!)2+(4!)2+……+(2008!)2 is

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The digit at the unit place of sum $(1!)^{2} + (2!)^{2} + (3!)^{2} + (4!)^{2} + \dots \dots + (2008!)^{2}$
is