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Apply logic part 4

Number Theory Level 2

Find the total number of digits in the number ${ 2 }^{ 2005 }\times { 5 }^{ 2000 }$ , when it is multiplied out.

10 100002

{ 2 }^{ 4005 }

{ 2 }^{ 2005 }

2002

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by Dinesh Nath Goswami

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