How many keystrokes are needed to type the numbers from 1 to 200?
Choose the correct option
A) 195
B) 280
C) 364
D) 492
E) 512
There are 9 one-digit numbers from 1 to 9.   There are 90 two-digit numbers from 10 to 99.   There are 101 three-digit numbers from 100 to 200.   9 + 90(2) + 101(3) = 492   The answer is 492.
<result>D</result>
How many keystrokes are needed to type the numbers from 1 to 200?