Final answer:
To simplify the expression 459123 mod 1459123 mod 1, divide 459123 by 1 to get the remainder, which is 0. The correct option is a.
Step-by-step explanation:
The expression 459123 mod 1459123 is asking for the remainder when 459123 is divided by 1459123. Since 459123 is less than 1459123, it cannot be divided completely and the entire number is the remainder. Therefore, the answer to 459123 mod 1459123 is 459123.
The second expression, 1459123 mod 1, is asking for the remainder when 1459123 is divided by 1. Any number divided by 1 is itself with no remainder, so the answer to 1459123 mod 1 is 0.
So, simplifying the given expressions we get:
459123 mod 1459123 = 459123
1459123 mod 1 = 0
Hence, a is the correct option.