( 1+17/1)*(1+17/2)*(1+17/3)*.*(1+17/19)/(1+19/1)*(1+19/2)*(1+19/30*.*(1+19/17)=?
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(1+17/1)*(1+17/2)*(1+17/3)*.*(1+17/19)/(1+19/1)*(1+19/2)*(1+19/30*.*(1+19/17)=?(1+17/1)*(1+17/2)*(1+
( 1+17/1)*(1+17/2)*(1+17/3)*.*(1+17/19)/(1+19/1)*(1+19/2)*(1+19/30*.*(1+19/17)=?
( 1+17/1)*(1+17/2)*(1+17/3)*.*(1+17/19)/(1+19/1)*(1+19/2)*(1+19/30*.*(1+19/17)=?
( 1+17/1)*(1+17/2)*(1+17/3)*.*(1+17/19)/(1+19/1)*(1+19/2)*(1+19/30*.*(1+19/17)=?
原式 = [18/1 * 19/2 * 20/3 .* 36/19] / [20/1 * 21/2 * 22/3 ...* 36/17] =
[18/1 * 19/2 * 20/3 .* 36/19] * [1/20 * 2/21 * 3/22 *...* 17/36] =
36!/ 36!=
1
1/17+2/17+…+16/17
1/17+2/17+3/17+...+15/17+16/17+1+16/17+15/17+...+3/17+2/17+1/17=
1/17+2/17+3/17+4/17+...+15/17+16/17
( 1+17/1)*(1+17/2)*(1+17/3)*.*(1+17/19)/(1+19/1)*(1+19/2)*(1+19/30*.*(1+19/17)=?
89/17-1/17*100+11/17
(68-17/18)×1/17
17(1)(2)
1,2,5,10,17( ),(
17题(1)(2)问,
(1),(2),17的题
1/17+2/17+3/17+4/17+.+17/15+16/17用简便计算要详细
(1-+17)*(1+17/2)*(1+17/3)*.*(1+17/18)*(1+17/19) 之积除以(1-+17)*(1+17/2)*(1+17/3)*.*(1+17/18)*(1+17/19) 之积除以 (1+19)*(1+19/2)*(1+19/3)*…..(1+19/16)*(1+19/17)=?
17分之1+17分之2+17分之3+17分之4+17分之5等于多少?
(1+17/96)+(1+17/96*2)+(1+17/96*3)+.+(1+17/96*94)+(1+17/96*95)
(1/15+2/17)*15*17 简算!急急急!
17/9÷[(4/9+1/2)×9/17]简算啊!
简便算法5/8×17÷1/8×2/17
17/19[(4/9+1/2)*9/17]简算