## Is 0 a perfect number?

According to the definition, since is neither a natural number nor a positive integer, hence is not a perfect number..

## Is 18 a perfect square?

Is 18 a perfect square number? A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 18 is about 4.243. Thus, the square root of 18 is not an integer, and therefore 18 is not a square number.

## IS 400 a perfect square?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 400 is 20. Therefore, the square root of 400 is an integer, and as a consequence 400 is a perfect square.

## Is 0 a perfect square number?

For example, 100 is a perfect square because it is equal to 10 × 10 10\times 10 10×10. If N is an integer, then N 2 N^2 N2 is a perfect square.

## Can you have 0 in a square root?

Zero has one square root which is 0. Negative numbers don’t have real square roots since a square is either positive or 0. The square roots of numbers that are not a perfect square are members of the irrational numbers. This means that they can’t be written as the quotient of two integers.

## What number is a perfect square?

25A perfect square is a number, from a given number system, that can be expressed as the square of a number from the same number system. 25 is a perfect square.

## IS 400 a perfect cube?

Since 2 & 5 do not occur in triplets. ∴ 400 is not a perfect cube.

## IS 800 a perfect cube?

The value of cube root of one is 800. The nearest previous perfect cube is 729 and the nearest next perfect cube is 1000 . Cube root of 800 can be represented as 3√800. The value of cube root of one is 800.

## IS 392 a perfect cube?

If not, find the smallest natural number by which 392 must be multiplied so that the product is a perfect cube. No, this is not a perfect cube. new number=392*7=2744.

## Is 26 a square number?

Is 26 a perfect square number? A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. … Thus, the square root of 26 is not an integer, and therefore 26 is not a square number.

## Is 18 a triangular number?

0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666…

## Is 21 a perfect square?

A: No, the number 21 is not a perfect square.