Question
How many times does the digit 6 appear in the list of all integers from 1 to 100?
Answers
Reiny
number of single digits without a 6 = 8
number of double digits without a 6 = 8*9 = 72
number of triple digits without a 6 = 1
number without a 6 = 81
so number containing a 6 = 100-81 = 19
number of double digits without a 6 = 8*9 = 72
number of triple digits without a 6 = 1
number without a 6 = 81
so number containing a 6 = 100-81 = 19
henry2
6, 16, 26, 36, 46, 56, 66, 76, 86, 96. 10 times.
61, 62, 63, 64, 65, 67, 68, 69. 8 times.
10+8 = 18 times.
Reiny
Henry2, what about 60?
so that makes it 19
so that makes it 19
Drake
Its 20.