计算2*3*4*5*(1/2-1/3+1/4-1/5)

问题描述:

计算2*3*4*5*(1/2-1/3+1/4-1/5)

2*3*4*5*(1/2-1/3+1/4-1/5)
=2*3*4*5*1/2-2*3*4*5*1/3+2*3*4*5*1*4-2*3*4*5*1/5
=3*4*5-2*4*5+2*3*5-2*3*4
=60-40+30-24
=26