Obtain the 5’s complement of numbers (543210), (354322) and (67345) with base 6.

To find the 5's complement of a number in base 6, you subtract each digit of the number from 5. Here's how you do it:

1. For the number 543210:

   • Subtract each digit from 5: 5-5, 5-4, 5-3, 5-2, 5-1, 5-0
   • The result is 012345

2. For the number 354322:

   • Subtract each digit from 5: 5-3, 5-5, 5-4, 5-3, 5-2, 5-2
   • The result is 211033

3. For the number 67345:

   • Subtract each digit from 5: 5-6, 5-7, 5-3, 5-4, 5-5
   • Since 6 and 7 are not valid digits in base 6, this number is not valid in base 6. Therefore, we cannot find its 5's complement.