Question

write down the digits 1 to 9 in descending order insert + and - signs to form a sum which totals 100​

Answer 1

Answer:

9,8,7,6,5,4,3,2,1

= 9+8+7+6+5+4+3+2+1+0-9-8-7-6-5-4-3-2-1

= 41+0-41= 0