Final answer:
In the Indian numerical system, there are 900 3-digit numbers.
Step-by-step explanation:
In the Indian numerical system, there are 10 possible digits (0-9) that can be used in each place value position. Since we are asked for 3-digit numbers, we can consider the hundreds, tens, and ones place.
For the hundreds place, we have 9 choices (1-9), since 0 cannot be the first digit.
For the tens and ones place, we have 10 choices for each position.
Therefore, the total number of 3-digit numbers in the Indian numerical system is 9*10*10 = 900.