Question

1道数学题1+.............+100是几

1+.............+100是几

Answer 1

5050
过程如下：
1+2+3+4+5+6+...+100
=(1+100)×100÷2
=5050
希望你采纳

Answer 2

1+2+3+...+100
=(首项+末项）*项数/2
=(1+100)×100÷2
=5050

Answer 3

等差数列，5050

Answer 4

1+2+3+4+5+6+......100
= (1+100)*100/2
=101*50
=5050

Answer 5

用等差数列前n相和Sn=n（a1+an）/2=5050