## How many three digit numbers contain at least one 7?

Three sevens: There is only one, 777. So in total there are 225+26+1=252 three-digit integers with a seven as a digit.

100000

225 numbers

## How do you write 50000?

Convert 50,000 to (US) American English words

1. 50,000 written in lowercase: fifty thousand.
2. WRITTEN IN UPPERCASE: FIFTY THOUSAND.
3. Title Case: Fifty Thousand.
4. Sentence case: Fifty thousand.

252 three

## Why is 50000 called 50K?

Why do people say 50K for 50 Thousand and not 50T? kilo is the ISO prefix for 1000. When discussing money, I observed that the IT community was an early adopter of using k, despite the disparity between 1000 and 1024 (computer speke). I’ve heard the slang use of G for grand to mean 1000, but T just never caught on.

37

## What is a 2 digit counting number?

We know that all the numbers are formed with the digits 1, 2, 3, 4, 5, 6, 7, 8, 9 and 0. (ii) There are 90 numbers of two digits. The smallest two-digit number is 10 and greatest two-digit number is 99. In a two-digit number, one digit is placed at ten’s place and the other at one’s place.

## How many three digit numbers are there?

In the tens place and the ones place, there can be any digit from 0-9. There are possibility of 10 digits in hundredth place and 10 digits in units place. Thus, there are 9 × 10 × 10 = 900 three digit numbers in all. Therefore there are 900 three-digit numbers in all.

## How do you write 7 digit numbers in words?

A 7-digit number can be written in the expanded form as per the place value of each of the digit in that number. For example, = + 9,00,000 + 80,000 + 8,000 + 900 + 10 + 3.

## How many numbers are there between 100 and 1000 such that exactly one digit is 5?

Now, we take hundreds place any one of the digits from 0 to 9 except 0 and 5. Therefore, it can be filled with 8 different ways. Hence, there are 9×8=72 numbers. When the hundreds place has 5, it means we can take units place any one of the digits from 0 to 9 except 5.

90,000 five

## How many three digit numbers contain at least two sevens?

There is one positive three digit integer that contains three 7’s, 777. Now for the ones that contain two 7’s. We could start with 77. Digits: 7 7 9 Possible Ones Digits We already used 777.

98 numbers

18 two

## What are the chances of guessing a 6 digit code?

So the combination can be 000000 or 999999, or anything in between. Since the odds of getting each digit is 1/10, you multiply 1/10 by itself 6 times. There’s literally a one in a million chance of guessing the PIN correctly.

90 two

5 digits

900,000 6