49又50分之49乘以50
问题描述:
49又50分之49乘以50
答
49又 49/50 * 50
=(50-1/50)*50
=2500-1
=2499
49又50分之49乘以50
49又 49/50 * 50
=(50-1/50)*50
=2500-1
=2499