The sum of the greatest five-digit number and the lowest/smallest four-digit number is:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 100999
The greatest five-digit number has 9 in every place, and the smallest four-digit number is 1 followed by three zeros.
Greatest five-digit number: 99999
Smallest four-digit number: 1000
Sum \(=99999+1000=100999\)