# How many times does 1 occurs in the numbers from 1 to 100?

## How many times does 1 occurs in the numbers from 1 to 100?

Hence, the digit 1 appears in numbers from 1 to 100 for 21 times.

**How many times does the digit 2 occur between 1 and hundred?**

Count the number of 2s as digit in all numbers from 0 to n. Examples : Input : 22 Output : 6 Explanation: Total 2s that appear as digit from 0 to 22 are (2, 12, 20, 21, 22); Input : 100 Output : 20 Explanation: total 2’s comes between 0 to 100 are (2, 12, 20, 21, 22..29, 32, 42, 52, 62, 72, 82, 92);

**How many times does 1 appear 100?**

∴ The digit 1 appear in number from 1 to 100 is 21.

### How many times does the digit 1 occur in the numbers from 100 to 1000?

Answer: 90 times. Originally Answered: How many times does the digit 1 occur in the tens place of the numbers from 100 to 1,000?

**How many times does 8 occur in the numbers from 1 to 100?**

So the total number of 8’s between 1 to 100 are as follows: 8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 98. There are only 19 numbers in total which have the number 8. However, in 88 there are two eights. Therefore the answer becomes 20 and not 19.

**How many times the digit 9 occurs in the numbers from 100 to 999?**

Between 100 – 900, 9 comes 161 times. Between 901 – 999, 9 comes 119 times.

## How many tens are there in a three digit number?

After 99, the counting number is 100. This is a three digit number. When one is added to 99, the sum is 100. In 100, there are 10 tens or 100 ones, i.e., (100 = 10 × 10 = 100 × 1).

**What are the 3 digit numbers?**

Expanded Form of 3-Digit Numbers

- 100 is the smallest 3-digit number and 999 is the greatest 3 digit number.
- A 3-digit number cannot start with 0.
- 10 tens make 1 hundred which is the smallest 3 digit number and 10 hundred make a thousand which is the smallest 4 digit number.

**What is the world’s favorite number?**

A survey launched by a British mathematics writer has found that seven is the world’s favorite number, reports The Guardian. The results of the online survey were published on Tuesday, with three, eight and and four coming second, third and fourth.

### What is the most unique number?

Therefore the number 6174 is the only number unchanged by Kaprekar’s operation — our mysterious number is unique. The number 495 is the unique kernel for the operation on three digit numbers, and all three digit numbers reach 495 using the operation.

**Is 3 a unique number?**

Three is unique number because of its universal uniqueness.

**Is there a zero in pi?**

Yes. Pi has an infinite number of zeros. Pi=3.14159265358979323846264338327950. And that is the first zero.

## Who was the first theoretically to calculate pi?

Archimedes of Syracuse

**What is the longest pi number?**

31.4 trillion digits