How many times the digit 6 appears in the number from 21 to 105?a)17b)...
Counting the number of times the digit 6 appears from 21 to 105:
To find the number of times the digit 6 appears in the range from 21 to 105, we need to examine each number individually within this range.
Numbers in the range:
- 21, 22, 23, 24, 25, 26, 27, 28, 29,
- 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
- 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
- 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
- 60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
- 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
- 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
- 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
- 100, 101, 102, 103, 104, 105
Counting the occurrence of digit 6:
The digit 6 appears in the following numbers: 26, 36, 46, 56, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 76, 86, 96, 106.
There are 18 occurrences of the digit 6 in the range from 21 to 105.
Therefore, the correct answer is option B - 18.