With numbers 1 to 9, we have to make the answer 100. How?You have numbers 1,2,3,4,5,6,7,8,9. You cannot change their sequence. You can only use +...

With numbers 1 to 9, we have to make the answer 100.
How?

You have numbers 1,2,3,4,5,6,7,8,9. You cannot change their
sequence. You can only use + or -. You can also join two or three digits but only in
order. eg: 12, 23, 34, 45, 56, 67, 78, 89 etc. You cannot use a number twice. Solve
it.