How many 6-digit numbers are there in all? (2024)

FAQs

How many 6-digit numbers are there in all? ›

One is the difference (d). The nth term is calculated using the formula. ∴ In total, there are 900,000 6-digit numbers.

Answer: There are 9,00,000 (nine lakh) 6-digit numbers in all.

Or, as @keith points out, the more intuitive way to establish it is simply by knowing that the largest possible 6 figure number is 999,999 (with the lowest being 0) which means there are precisely 1,000,000 possible combinations of a 6 numerical-character string.

The combinations for this problem depends on whether repetition of digits is allowed or not. If repetition is not allowed, then there are 10 * 9 * 8 * 7 * 6 * 5 possible combinations = 151200.

But we don't care which order our numbers are picked, and the number of different ways of picking 6 numbers are 6 x 5 x 4 x 3 x 2 x 1 = 6! = 720. Therefore our six numbers are one of 49 x 48 x 47 x 46 x 45 x 44 / 6! = 13983816 so we have about a one in 14 million chance of hitting the jackpot.

The correct Answer is:900000.

600 different numbers will be there.

In your example, we can think about it as follows: A six-digit code has 1,000,000 possible states, hence allows for a 1/1,000,000 chance to correctly guess it on the first try.

There is no “hardest” 6-digit password. Since you specified digits, there are exactly 1,000,000 possible passwords (from “000000” to “999999”), for about 20 bits of entropy. This is insufficient unless there are other strong methods (such as increasing lock-out times) used to prevent guessing attempts.

The number of total possible codes: n(T): Therefore, the probability of generating 6 digits and the code consisting of 1,2, 3, ... 6 is 0.0466.

What are 6-digit codes? ›

What is a Six-Digit Code? Also referred to as a short code, or six digit phone number, six-digit codes are numbers created by major wireless carriers. These phone numbers allow marketers to communicate with consumers about things like promotional offers, new products and services.

A 6-digit number is like a 10-digit phone except, well, shorter. Instead of using the ten digits, you're familiar with, a 6-digit phone number only uses six. Aside from its length, the only difference is that you can't call a 6-digit number, as it only works for text messaging.

How do you find the total number of combinations? To find the total number of combinations of size r from a set of size n, where r is less than or equal to n, use the combination formula: C(n,r)=n!/r!(n-r!)

As long as it doesn't matter which order the numbers are picked in, you have: 49 C 6, or 49 choose 6. Enter this into google and it will tell you: 49 choose 6=13,983,816 different possible combinations of numbers……….

Thus, if the order does not matter, there are 15890700 ways to select 6 numbers from 50 numbers.

When a die is rolled, then the six possible outcomes are 1,2,3,4,5 and 6.

The number just after 9547999 is 9547999 + 1 = 9548000.

How Many 7-Digit Numbers are there in all? 7-digit numbers start from 1000000 and end with 9999999. There are ninety lakh (90,00,000) 7-digit numbers in all.

The smallest 5 digit number is 10,000 and the greatest 5 digit number is 99,999. There are 90,000 five-digit numbers in all. The digit at the ten thousands place in a 5-digit number can never be 0.