请问(2*2⼀1*3)*(3*3⼀2*4)*(4*4⼀3*5)*......*(98*98⼀97*99)*(99*99⼀98*100)等于多少,要有计算过程

2024-11-26 10:45:45
推荐回答(1个)
回答1:

(2×2/1×3)(3×3/(2×4)...(99×99)/(98×100)
=(2×3×4×...×99)×(2×3×4×...×99)/[(1×2×3×...×98)×(3×4×5×...×100)]
=[(2×3×4×...×99)/(1×2×3×...×98)][(2×3×4×...×99)/(3×4×5×...×100)]
=99×(2/100)
=99/50