给我几道七年级上学期的奥数题,比较难的,然后还要有答案!!!!!急急急!!!!!!!

2025-01-05 16:00:51
推荐回答(2个)
回答1:

(1+ )(1+ )(1+ )(1+ )…(1+ )(1+ )
S= + + +…+ ,T= + + +…+ ,则S-T等于( )
A. B.1- C. -1 D. +1
7.(第18届五羊杯竞赛题)计算 + + +…+ =

回答2:

aFHEUFYCU