A={a1,5a1,7a1,11a1} is the answer.
所有跟帖:
• 4):A={a1,5a1,7a1,11a1}and A={a1,11a1,19a1,29a1} a1 cantake any -jinjing- ♀ (0 bytes) () 08/03/2011 postreply 15:16:48
• 4):A={a1,5a1,7a1,11a1}and A={a1,11a1,19a1,29a1} a1 cantake any -jinjing- ♀ (0 bytes) () 08/03/2011 postreply 15:16:48