- What is Peterson number?
- Why 73 is the best number?
- Why is 1 a Kaprekar number?
- What is the hardest 4 digit code?
- What is Krishnamurthy number?
- What is the most common Pick 4 number?
- What is the weirdest number?
- What is the luckiest number in the universe?
- What are the special numbers?
- What number can you add to any other number and always get that same number as the answer?
- Why is 1089 a magic number?
- What is the mysterious number?
- How do I find my Kaprekar number?
- What is the most famous number?
- What is special about the number 6174?
- Is 9 a divine number?
- Why is 28 the perfect number?
- What is meant by Kaprekar number?

## What is Peterson number?

A number is said to be a Peterson number if the sum of factorials of each digit of the number is equal to the number itself.

Example: Input : n = 145 Output = Yes Explanation: 145 = 5!.

## Why 73 is the best number?

“73 is the 21st prime number,” Sheldon explains. “Its mirror, 37, is the 12th and its mirror, 21, is the product of multiplying 7 and 3 … and in binary 73 is a palindrome, 1001001, which backwards is 1001001.”

## Why is 1 a Kaprekar number?

The universal Kaprekar number 1 corresponds to the unitary divisor 1 of 10n – 1, which is why we allow unity as a Kaprekar number. For each n >= 1 , we disallow 10n as a Kaprekar number since it is the vacuous solution to (1) and (2) when N = 10n .

## What is the hardest 4 digit code?

All 10.000 are equally hard assuming you pick one at random. 1111 is mathematically no easier to guess than 3861. Since humans have a tendency to prefer patterns, picking a sequence that isn’t a commonly used pattern is likely better though.

## What is Krishnamurthy number?

A Krishnamurthy number is a number whose sum of the factorial of digits is equal to the number itself. Given a number N as input. Print “YES” if it’s a Krishnamurthy Number, else Print “NO”.

## What is the most common Pick 4 number?

The odds of matching all four numbers in the exact order in a Pick 4 drawing are 1 in 10,000. The numbers 1-0-1-0 are one of the most popular combinations of numbers played in the Pick 4 game.

## What is the weirdest number?

The smallest weird number is 70. Its proper divisors are 1, 2, 5, 7, 10, 14, and 35; these sum to 74, but no subset of these sums to 70. The number 12, for example, is abundant but not weird, because the proper divisors of 12 are 1, 2, 3, 4, and 6, which sum to 16; but 2 + 4 + 6 = 12.

## What is the luckiest number in the universe?

7What is the luckiest number in the universe? Number 7 is the luckiest number in the universe. This number represents perfection and some interesting things in the universe. To illustrate, note that there are 7 days in a week and 7 colors in a rainbow.

## What are the special numbers?

Special Numbers in Java are ones whose sum of factorials of digits is equal to the number itself. It can be an N digit number. The program has to first break the number into its corresponding digits and calculate their factorials. … If the sum matches the original number then the number is called to be a Special number.

## What number can you add to any other number and always get that same number as the answer?

And Then There was Zero Zero is the value for nothing when it stands alone. You are able to add zero to any number and get the same number in the sum. You can do this because of another law in math. The “adding zero” law is called the Identity Law of Addition.

## Why is 1089 a magic number?

1089 is widely used in magic tricks because it can be “produced” from any two three-digit numbers. This allows it to be used as the basis for a Magician’s Choice. … Reverse the digits, and subtract the smaller from the larger one. Add to this result the number produced by reversing its digits.

## What is the mysterious number?

Anyone can uncover the mystery. The number 6174 is a really mysterious number. At first glance, it might not seem so obvious. But as we are about to see, anyone who can subtract can uncover the mystery that makes 6174 so special.

## How do I find my Kaprekar number?

A non-negative integer having base(10) is said to be the Kaprekar number if the representation of its square in its base can be split into two parts that add up to the original number, with the condition that the part formed from the low-order digits of the square must be non-zero-however, it is allowed to include …

## What is the most famous number?

10 Famous Numbers911 is most recognizable as the number to call for emergencies. … 7 is the number most commonly designated as people’s favorite. … 73 is Sheldon Cooper’s favorite number (on the TV show The Big Bang Theory). … 10 is most famous because it’s usually the number of items on “top” or “most” lists!More items…

## What is special about the number 6174?

6174 is known as Kaprekar’s constant after the Indian mathematician D. R. Kaprekar. This number is notable for the following rule: … Arrange the digits in descending and then in ascending order to get two four-digit numbers, adding leading zeros if necessary.

## Is 9 a divine number?

The number 9 is revered in Hinduism and considered a complete, perfected and divine number because it represents the end of a cycle in the decimal system, which originated from the Indian subcontinent as early as 3000 BC.

## Why is 28 the perfect number?

A number is perfect if all of its factors, including 1 but excluding itself, perfectly add up to the number you began with. 6, for example, is perfect, because its factors — 3, 2, and 1 — all sum up to 6. 28 is perfect too: 14, 7, 4, 2, and 1 add up to 28.

## What is meant by Kaprekar number?

In mathematics, a natural number in a given number base is a -Kaprekar number if the representation of its square in that base can be split into two parts, where the second part has. digits, that add up to the original number. The numbers are named after D. R. Kaprekar.