[中學] 純運算題,怎解?
1/1x2 + 1/1x2x3 + 1/1x2x3x4 + 1/1x2x3x4x5 +.............
+ 1/1x2x3x4x5x6x7x8x9x10 =?
請問這題有特殊解法嗎??
應該不會硬算吧??
可是我看不出來可以怎麼解??
求教之~
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推
10/11 19:33, , 1F
10/11 19:33, 1F
→
10/11 19:33, , 2F
10/11 19:33, 2F
→
10/11 19:35, , 3F
10/11 19:35, 3F
→
10/11 19:45, , 4F
10/11 19:45, 4F
→
10/11 19:48, , 5F
10/11 19:48, 5F
→
10/11 20:03, , 6F
10/11 20:03, 6F
→
10/11 20:03, , 7F
10/11 20:03, 7F
推
10/11 22:22, , 8F
10/11 22:22, 8F