某次知识竞赛共有20道题,每一题答对得10分,答错或不答都扣5分,小明得分要超过90分,他至少要答对多少道题?/P+t8m.F'|1['k5x9~'r4s
算式:提示+C;C6Q,l.l(X/P+t8m.F'|1['k5x9~'r4s
答:他至少要答对0]*a7R'o3q3T0D.|-M5U.x4T2I)X3y道题。/P+t8m.F'|1['k5x9~'r4s