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India Contests
Regional Mathematical Olympiad
1999 India Regional Mathematical Olympiad
2
2
Part of
1999 India Regional Mathematical Olympiad
Problems
(1)
No of divisors
Source: Indian RMO 1999 Problem 2
10/26/2005
Find the number of positive integers which divide
1
0
999
10^{999}
1
0
999
but not
1
0
998
10^{998}
1
0
998
.