找规律 1/2 1/4 3/8 15/16 105/32 ( )( ) ( )

速度谢谢

第1个回答  推荐于2020-12-09
1/2 1/4 3/8 15/16 105/32 945/64 10395/128 135135/2561 / 2=1/21x1 / 2x2=1/41x3 / 2x2x2=3/81x3x5 / 2x2x2x2=15/161x3x5x7 / 2x2x2x2x2=105/321x3x5x7x9 / 2x2x2x2x2x2=945/641x3x5x7x9x11 / 2x2x2x2x2x2x2=10395/1281x3x5x7x9x11x13 / 2x2x2x2x2x2x2x2=135135/256
第2个回答  2013-10-27
(105x7)/(32x2)(735x11)/(64x2)(735x11x13)/(64x2x2)
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