192 digits
101
1 googol = 10100 = '1' followed by 100 zeroes. The number has (1 googol + 1) digits.
25 digits
425
There are 2700 digits.
-99
10 digits, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0
139
-99
There are 3
7 digits
19 do.
Just 1 The two zeros are placeholders- placeholders are not significant
9
A digit is each number (0-9) that makes a number. For instance, 100 has three digits - one is the 1; two are zeros. There are 6 digits in 231,527.
90. all the numbers from 10 through 99