If a is the digit in unit place of the sum 1!+2!+⋯+39!, b is the dig – InterviewSolution

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1.	If a is the digit in unit place of the sum 1!+2!+⋯+39!, b is the digit in unit place of (16)256 and c is the digit in unit place of (3)400, then a+b+c is equal to
Answer» If $a$ is the digit in unit place of the sum $1! + 2! + \dots + 39!, b$ is the digit in unit place of $(16)^{256}$ and $c$ is the digit in unit place of $(3)^{400},$ then $a + b + c$ is equal to

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