How many dissimilar three digit numbers include only non-zero numbers?
A. 984
B. 353
C. 122
D. 729
E. 652

• ans = E that is 652 because the no. of 3 digit non zero started from 111-119 and similarly 121-129 ........
  the total counting is 81 in bw 100-200 now from 200-999 there is 8 lines therefore 81*8=648 with some another case it is near about 652.
• 12 years agoHelpfull: Yes(2) No(1)
• i'm not sure i think its 729
• 12 years agoHelpfull: Yes(1) No(1)