1/1*2+1/2*3+1/3*4+1/4*5.1/99*100=
1/1*2+1/2*3+1/3*4+1/4*5.1/99*100=
1/1*2*3+1/2*3*4+1/3*4*5.1/99*100*101
数学题目:1/2+1/3+1/4+1/5.1/98+1/99+1/100=?高手来解决啊!
怎样计算下列式子:1/1*2+1/2*3+1/3*4+1/4*5.1/99*100
1*2/1+2*3/1+3*4/1+.98*99/1+99*100/1=?
1*1*1+2*2*2+3*3*3+4*4*4+.+99*99*99*+100*100*100=?
1/1×2+1/2×3+1/3×4+1/4×5+.+1/98×99+1/99×100=?
1/1*2+1/2*3+1/3*4+1/4*5+.1/98*99+1/99*100=?
1/1*2+1/2*3+1/3*4+…+1/99*100=?
1/1*2+1/2*3+1/3*4+.1/99*100=?
1/1*2*3*4+1/2*3*4*5+...+1/97*98*99*100=?
(-1*1\2)+(-1\2*1\3)+(-1\3*1\4)+.+(-1\99*1\100)