If r = 199,999 and s = 991,999, which of the following is the units digit of r^2 + s^3?
Choose the correct choice from the following answers
A) 0	B) 1	C) 3	D) 9	E) 7
Using cyclicity rule of number 9   199,999^2 will have units digit as 1   991,999^3 will have units digit as 9   Thus r2 + s3 = 1 + 9 = 0   Thus answer will be (0)
<result>A</result>
If r = 199,999 and s = 991,999, which of the following is the units digit of r^2 + s^3?