1.

Write the units digit of the cube of each of the following: 4447, 125125125

Answer»

i) 44447

Unit digit of 44447 is = 7

Cube of 7, 

= 73 

= 343

∴ Unit digit of cube of 44447 is always 3

ii) 125125125

Unit digit of 125125125 is = 5

Cube of 5. 

= 53 

= 125

∴ Unit digit of cube of 125125125 is always 5



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