49+490×5+49×49=4900
49+490×5+49×49
=49+49×50+49×49
=49×(1+50+49)
=49×100
=4900
49+490*5+49*49
=49*(1+50+49)
=49*100
=4900
标签:算法
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49+490×5+49×49=4900
49+490×5+49×49
=49+49×50+49×49
=49×(1+50+49)
=49×100
=4900
49+490*5+49*49
=49*(1+50+49)
=49*100
=4900
标签:算法