(2*5+2)(4*7+2)(6*9+2)(8*11+2)……(1994*1997+2)/(1*4+2)(3*6+2)(5*8+2)(7*10+2)……(1993*1996+2)

5+6+8+9+9+5+2+9+7+4 2-2^2-2^3-2^4-2^5-2^6-2^7-2^8-2^9+2^10 |2 -5 1 2| |-3 7 -1 4| |5 -9 2 7| |4 -6 1 15/2×5/9+4/7+11/5×6/5 1+2+3+4+5+6+7+8+9-2-3-4-5-6-78-9 2^13+2^12+2^11+2^10+2^9+2^8+2^7+2^6+2^5+2^4+2^3+2^2+2+1 1,2,3,4,5,6,7,8,9,2,4,6,2的中位数是? 请帮我解答这道数独题题目： 8 5 6 4 2 9 1 7 6 1 6 5 2 2 9 6 4 2 3 5 7 9 2 8 7 9 5 5 8 6 9 1 9 3 5 2题目：( ) ( ) 8 5 ( ) 6 4 ( ) ( )( ) ( ) 2 9 1 7 6 ( ) ( )( ) 1 6 ( ) ( ) ( ) 5 2 ( )2 9 8+4+5+2+7+9+6+5+8? 5/6+27+5/9+1/6+1/7+3/7+5/9+4/7+2/5+4/9+4/5+1/5+2/9=? 计算：(2×5+2)×(4×7+2)×(6×9+2)...(2012×2015+2)/(1×4+2)×(3×6+2)×(5×8+2)...(2011×2014+2) 9+6+4+5+2 2,1,2,3,2,4,5,6,B,7,8,9,2B等于几 (1)9/4*(-6/7)/(1/2-2)=?(2)(-16-50+17/5)/(-2)=? 5×6×7×8×9分之5×6×7×8×9-1×2×3×4×5 2+2+2+5+8+4+7+5+9+5 6,7,9,4、6,6,1,8,、3,5,2,2,、2,7,8,9,、算24点 1,2,3,4*2,5*2,6,4*2,5*2,6,7,8,5*2,6,9*2,10这个表示什么含义