Question

how many times the digit 7 appear in the number from 0 to 108​

Answer 1

Answer:

hey mate here is your answer

Step-by-step explanation:

in the number 0 to 108 the number seven will appear 20 times

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Answer 2

The digit 7 appears 21 times in the given range from 0 to 108.

The cases in which the digit '7' appears in the numbers from 0 to 108 can be divided into parts as :

1. Single-digit numbers that have 7 i.e. from 0 to 9
2. Double-digit numbers that have 7 as their first digit i.e. from 10 to 99
3. Double-digit numbers that have 7 as their last digit i.e. from 10 to 99
4. Triple-digit numbers that have 7 i.e. from 100 to 108

Case 1 : Single-digit numbers

• The numbers within this range include 0 to 9
• The number with the digit 7 in this range is the number 7
• So, the count of occurrence of 7, in this case, is 1.

Case 2 : Double-digit numbers starting with 7

• The numbers within this range include 10 to 99
• The numbers that start with the digit 7 are 70, 71, 72, 73, 74, 75, 76, 77, 78, 79
• So, the count of occurrence of 7, in this case, is 11.

Case 3 : Double-digit numbers ending with 7

• The numbers within this range include 10 to 99
• The numbers that end with the digit 7 are 17, 27, 37, 47, 57, 67, 77, 87, 97
• Except for 77 which is counted above, the count of occurrence of 7, in this case, is 8.

Case 4 : Triple-digit numbers

• The numbers within this range include 100 to 108
• The number within this range that has '7' is the number 107.
• So, the count of occurrence of 7, in this case, is 1.

So, the total occurrences of digit 7 are:

            $= 1 + 11 + 8 + 1\\= 21$

Hence, the digit 7 appears 21 times in the given range.

To learn more about Digit Count, visit

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