Final answer:
The number of toys represented as T_0001 is 1001, and the next three numbers in sequence are 1002, 1003, and 1004.
Step-by-step explanation:
If the number of toys in a toyshop is represented on an abacus as T_0001, the value of the number is understood as the sequence starting from 1. So, T_0001 indicates the first toy in the sequence. The next three numbers in this sequence would be as follows:
- 1002
- 1003
- 1004
Each number is the subsequent integer following the previous, which is a basic counting sequence in mathematics.