Question

1+2+3+4+5+6……+99=?

Answer 1

1+2+3+4+5+6……+99
=(1+99)*99/2
=4950

Answer 2

1+2+3+4+5+6……+99
=(1+99)*99/2
=4950

Answer 3

1+2+3+4+5+6……+99
=(1+99)*99/2
=4950

Answer 4

1+2+3+4+5+6+7……+99
=（1+99）×99÷2
=100×99÷2
=9900÷2
=4950

Answer 5

(1+99)+(2+98)+(3+97)+(4+96)……=5000

Answer 6

就相当于1+99，也就是100，再乘49，再加50等于4950