- What are the 5 data types?
- What is meant by vampire number?
- What is magic number in Java?
- Is a Magic Number Java?
- How many types of numbers are there?
- Is perfect number Java?
- What is Dracula number?
- What type of number is 0?
- Is 1827 a vampire number?
- How many types of numbers are there in Java?
- Is 407 a narcissistic number?
- Which is a magic number?

## What are the 5 data types?

Common data types include:Integer.Floating-point number.Character.String.Boolean..

## What is meant by vampire number?

In number theory, a vampire number (or true vampire number) is a composite natural number with an even number of digits, that can be factored into two natural numbers each with half as many digits as the original number and not both with trailing zeroes, where the two factors contain precisely all the digits of the …

## What is magic number in Java?

What is Magic Number in Java? Magic number is the if the sum of its digits recursively are calculated till a single digit If the single digit is 1 then the number is a magic number.

## Is a Magic Number Java?

A magic number is a numeric literal that is used in the code without any explanation of its meaning. SALARY_PER_HOUR is a constant, which in Java is a variable whose content does not change during the execution of the program. …

## How many types of numbers are there?

Lesson SummaryNatural NumbersAlso known as the counting numbers, they include 1,2,3,4,5,6…Whole NumbersAll the natural numbers, including 0IntegersAll whole numbers, including negative numbersRational NumbersAll integers, including fractions2 more rows

## Is perfect number Java?

Any number can be a Java Perfect Number if the sum of its positive divisors excluding the number itself is equal to that number. For example, 28 is a perfect number because 28 is divisible by 1, 2, 4, 7, 14 and 28 and the sum of these values is 1 + 2 + 4 + 7 + 14 = 28. Remember, we have to exclude the number itself.

## What is Dracula number?

Meet the numbers that put the count in Count Dracula: vampire numbers. The term was coined in 1994 by US computer scientist Clifford A. … The lowest vampire number is 1260 because 21 x 60 = 1260. 21 and 60 are the fangs which are each exactly half the length of the original four digit number.

## What type of number is 0?

1 Answer. 0 is a rational, whole, integer and real number. Some definitions include it as a natural number and some don’t (starting at 1 instead).

## Is 1827 a vampire number?

vampire numbers. cannot end both in ‘0’. The first vampire numbers are 1260 = 21 ⋅ 60, 1395 = 15 ⋅ 93, 1435 = 35 ⋅ 41, 1530 = 30 ⋅ 51 and 1827 = 21 ⋅ 87.

## How many types of numbers are there in Java?

There are six numeric types four integer and two floating point: byte 1 byte -128 to 127. short 2 bytes -32,768 to 32,767. int 4 bytes -2,147,483,648 to 2,147,483,647.

## Is 407 a narcissistic number?

Since the number of digits is not equal to the power to which they are taken for such numbers, they are not narcissistic numbers….Narcissistic Number.base-10 -narcissistic numbers10, 1, 2, 3, 4, 5, 6, 7, 8, 93153, 370, 371, 40741634, 8208, 9474554748, 92727, 9308425 more rows

## Which is a magic number?

A number is said to be a magic number, if the sum of its digits are calculated till a single digit recursively by adding the sum of the digits after every addition. If the single digit comes out to be 1,then the number is a magic number.