1.

Find the digit at unit place of cube of 5321​

Answer»

FIND the digit at the unit place of the cube of 5321.

Step-by-step explanation:

  • The statement to find the unit place of a cube is,

The unit digit of the cube of any NUMBER will be the unit digit of the cube of its last digit.  

  • The last digit of 5321 is 1.
  • The cube of the last digit is = 1³ = 1
  • Therefore, the digit at the unit place of the cube of 5321 is 1.  
  • Some other examples are:

A) 121  

  • Unit digit of 1³ = 1
  • The digit at the unit's place of the cube is also 1.

B) 25  

  • Unit digit of 5³ = 125  
  • The digit at the unit's place of the cube is also 5.

C) 77

  • Unit digit of 7³ = 343
  • The digit at the unit's place of the cube is also 3.


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