How many times does the digit 5 appear when w | vedclass

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Question

(A) To find the number of times the digit $5$ appears between $1$ and $100$,we count the occurrences in the units place and the tens place separately.

Vedclass · Accepted Answer

$20$

Vedclass · Answer

(A) To find the number of times the digit $5$ appears between $1$ and $100$,we count the occurrences in the units place and the tens place separately.$1$. In the units place: The numbers are $5, 15, 25, 35, 45, 55, 65, 75, 85, 95$. There are $10$ such numbers.$2$. In the tens place: The numbers are $50, 51, 52, 53, 54, 55, 56, 57, 58, 59$. There are $10$ such numbers.Note that the number $55$ is counted in both lists (once for the units place and once for the tens place),which is correct because the digit $5$ appears twice in $55$.Total count = $10 + 10 = 20$.

How many times does the digit $5$ appear when writing natural numbers from $1$ to $100$?

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