Sagot :
there are nine 1 digit number, one 3 digit number and 90 2 digit number.
(9*1) + (1*3) + (90*2)
9 + 3 + 180 = 192
there are 192 digits all in all
(9*1) + (1*3) + (90*2)
9 + 3 + 180 = 192
there are 192 digits all in all