1+2+4+5+7+8+10+11+13+14+16+17+19+20等于几

2024-11-29 02:18:11
推荐回答(3个)
回答1:

答案是147

回答2:

=(1+20)+(2+19)+(4+17)+(5+16)+(7+14)+(8+13)+(10+11)
=21+21+21+21+21+21+21
=147

回答3:

=21*7
=147