Question

if x and y are the number of possibilities that A can assume such that the unit digit of A can same and the unit digit of Asquare and A cube are same respectively then the value of x-y is where a is a single digit number

Answer 1

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

If there is any confusion please leave a comment below.

Answer 2

ATQ

x and y are the possibilities

then x must be=0/1/5/6 total=4

and y should be=1/5 total=2

(qualified by the options given)

hence

x-y=4-2=2