How many 3 digits number are there which sum of digits is equal to 16.
Answers.
A) 63	B) 64	C) 65	D) 66	E) 67
100-200=4;   200-300=5;   ---------   ---------   700-800=10;   800-900=9;   900-999=8;   Total= 66   ANSWER:66
<result>D</result>
How many 3 digits number are there which sum of digits is equal to 16.