Question

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17....to 99 =​

Answer 1

Answer:

please mark me brainleast

Answer 2

Answer:

755

Step-by-step explanation:

See bro or sis just multiply every number from 1 to 9 with 9 means 1×9 then 2×9 like this till 9 ok like for 9 it will be 9×9 ok just add these all ok after multipling

then add 10,20,30,40,50,60,70,80,90 and this should be the correct thing I guess