找规律3,7,15,31,63,( ),225...

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找规律3,7,15,31,63,(),225...找规律3,7,15,31,63,(),225...找规律3,7,15,31,63,(),225...2×3+1=72×7+1=15……63×2+1=1

找规律3,7,15,31,63,( ),225...
找规律3,7,15,31,63,( ),225...

找规律3,7,15,31,63,( ),225...
2×3+1=7
2×7+1=15
……
63×2+1=127

后项减去前项得到
4,8,16,32,64......
()应该填63+32=95

3,7,15,31,63,(127 ),255...

3,7,15,31,63,(127 ),225...

127

127