Question

24389 is a perfect cube. Find the unit's digit of its cube root.​

Answer 1

Answer:

29 cube root

Step-by-step explanation:

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Answer 2

Given : 24389 is a perfect cube.

To Find : the unit's digit of its cube root.​

Solution:

Cube of number ending with 0 ends with 0

Cube of number ending with 1 ends with 1

Cube of number ending with 2 ends with 8

Cube of number ending with 3 ends with 7

Cube of number ending with 4 ends with 4

Cube of number ending with 5 ends with 5

Cube of number ending with 6 ends with 6

Cube of number ending with 7 ends with 3

Cube of number ending with 8 ends with 2

Cube of number ending with 9 ends with 9

24389 is a perfect cube ending with 9

Cube of number ending with 9 ends with 9

hence its cube root unit digit must be 9  

24389

389

24

2³< 24 < 3³

∛24389  = 29

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