Question

if x and y are the numbers of possibilities that A can assume such that the unit digit of A and A cube are same and the unit digit of A square and A cube are same respectively, then the value of x -
y is

Answer 1

For a single digit number A  

it's cube  is equal to it's number itself  

if A = 1,-1,0

it's square is equal to it's number itself

if A= 1,0

x-y=3-2=1...

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Answer 2

Thank you for asking this question. Here is your answer:

These are the possibilities  

For a single digit number A  

it's cube  is equal to it's number itself  

if A ={1,-1,0}

it's square is equal to it's number itself

if A={1,0}

x-y=3-2=1

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