1,3,4,6,9,12,(),(),25,48
5/9*80%*3/4,3/8*25%+4/8*1/4,48*(11/12-12.5%-1/6),7/8-7/8*20%
1*3*24+2*6*48+3*9*72/1*2*4+2*4+3*6*12
(1*3*24+2*6*48+3*9*72)/(1*2*4+2*4*8+3*6*12)
1*2*4+2*4*8+3*6*12分之1*3*24+2*6*48+3*9*27
1*2*4+2*4*8+3*6*12分之1*3*24+2*6*48+3*9*72
1×2×4+2×4×8+3×6×12分之1×3×24+2×6×48+3×9×72
(1/3/12+2/6/24+3/9/36+4/12/48)/(2/3/5+4/6/10+6/9/15+8/12/20)
1×3×24+2×6×48+3×9×721×2×4+2×4×8+3×6×12
按规律填数3,6,12,( ),48,( ),192 1,4,9,16,( ),( ),49,64
48-6x=18 3×7+4x=25 12x-9x=8.
1×3×5+2×6×10+3×9×15+4×12×20+5×15×25/1×2×3+2×4×6+3×6×9+4×8×12
(1*2*24+2*6*48+3*9*72+4*12*96)/(1*2*4+2*4*8+3*6*12+4*8*16)简算