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Submitted by shivanibusiness on Tue, 2008-06-17 12:18

1) 10²⁵ - 7 is divisible by

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Posted on: Tue, 2008-06-17 13:35 #1

Joined: 2007-09-03

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1) 1025 - 7 is divisible

1) 10²⁵ - 7 is divisible by

10^{25 means total 26 digit}

so 10²⁵-7=99999.....24times and in last3

so this number divided by only 3

Little Star

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Posted on: Tue, 2008-06-17 14:58 #2

Joined: 2008-01-02

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1025 - 7=(10 25

10²⁵ - 7
=(10 25 -1)-(6)
=(9999999...25 times) -(6)
=9999999... (24 times ) 3

It can be only divisible by 3 out the options given .
So, (2) 3

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