Question

Perfect cubes 1 to 20​

Answer 1

⭐⭐ Hey mate ⭐⭐

Here is the answer ::

Perfect cube :-

A number is said to be a factor cube if all the factors of that number are in 3 .

Numbers from 1 to 20 that are perfect cube :-

1 & 8 are the only perfect cubes between 1 & 20.

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Answer 2

The number of perfect cubes between 1 to 20 is 2 i.e 1 and 8

Given:

Perfect cubes 1 to 20​

Solution:

Perfect cubes:  

The numbers that can be written as the cube of an integer are known as Perfect cubes. If a is an integer then a³ will be the perfect cube of a.

For example, 8 is a perfect cube since it can be written as 2³ i.e 2 × 2 ×2    

The perfect cubes from 1 to 20 that can be written as  

1³ = 1             11³ = 1331

2³ = 8           12³ = 1728

3³ = 27          13³ = 2197

4³ = 64         14³ = 2744

5³ = 125        15³ = 3375

6³ = 216        16³ = 4096

7³ = 343        17³ = 4913

8³ = 512         18³ = 5832

9³ = 729         19³ = 6859

10³ = 1000      20³ = 8000

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