Types of Numbers

49 = 7 × 7

Square root of 196 = 14 × 14

Square of 11 = 11 × 11 = 121

Square of 71 = 71 × 71 = 5041

784 = 28 × 28 = 28²

<span style="font-family:" arial;="" font-size:="" small;="">Cube of 9 = 9 × 9 × 9 = 729

512 = 8 × 8 × 8
Thus, 512 is a cube number.

1331 = 11 × 11 × 11
Thus, 1331 is the cube of 11.

Cube of 21 = 21 × 21 × 21 = 9261

8² = 64

<span style="font-family:" arial;="" font-size:="" small;="">Cube of 2 = 2³ = 8

15 × 15 × 15 = 3375
Thus, 3375 is the cube of 15.

225 = 15 × 15
Thus, 225 is the square of 15.

484 = 22 × 22 = 22²

3, 5, 7, 9
So, there are four odd numbers from 1 to 10.

From 12 to 24, there are 7 even numbers (12, 14, 16, 18, 20, 22, 24).

13 × 13 = 169, which is an odd number.

<span style="font-family:" arial;="" font-size:="" small;="">Square of an even number is<span style="font-family:" arial;="" font-size:="" small;=""> always even. For example, 2² = 4, 4² = 16, 16² = 256 etc.

Square of an odd number is always an odd number.
3² = 9
5² = 25
13² = 169
27² = 729 etc.

A prime number can have only two factors, i.e. a number itself and 1.

Cube of an odd number is always odd.
3³ = 27, 5³ = 125

19 is a prime number.

From 1 to 10, there are four<span style="font-family:" arial;="" font-size:="" small;=""> <span style="font-family:" arial;="" font-size:="" small;="">(2, 3, 5, 7) <span style="font-family:" arial;="" font-size:="" small;="">prime numbers.

From 56 to 60, there are two prime numbers (i.e. 53 and 59).

89 is a prime number.