62. Is 0.n68<1/n?
1). n<5
2). 0.n68<1/n^2
IMO: [spoiler]C[/spoiler]
63. What is a certain number between 100 and 500?
1). The product of three digits is 30.
2). The tens' digit is lager than the units' digit. IMO [spoiler]E - 253, 352[/spoiler]
1). n<5
2). 0.n68<1/n^2
IMO: [spoiler]C[/spoiler]
63. What is a certain number between 100 and 500?
1). The product of three digits is 30.
2). The tens' digit is lager than the units' digit. IMO [spoiler]E - 253, 352[/spoiler]
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