Question

Adding 1 to the largest 6-digit number gives us the smallest _____ digit number.

• A. 6
• B. 7
• C. 5
• D. 8

Answer 1

The correct option is B

7

The largest 6-digit number is 999999.

999999 + 1 = 1000000

$11111999999\underset{–}{+1}\underset{–}{1000000}$

But, 1000000 is the smallest 7-digit number.

Thus, adding 1 to the largest 6-digit number gives us the smallest 7-digit number.