Write out the numbers 1 to 100.
Count the number of times 1 appears.
192 digits
101
1 googol = 10100 = '1' followed by 100 zeroes. The number has (1 googol + 1) digits.
25 digits
425
192 digits
There are 2700 digits.
101
1 googol = 10100 = '1' followed by 100 zeroes. The number has (1 googol + 1) digits.
300
25 digits
-99
1100
425
10 digits, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0
139
17