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For all positive integers m and n, the expression $$m \triangle n$$ represents the reminder when m+n is divided by m-n. What is the value of $$((19\triangle9)\triangle2)-(19\triangle(9\triangle2))?$$
A. -8
B. -6
C. -4
D. 4
E. 6
The OA is C.
I solved it as:
$$\left((19\triangle9)\triangle2 \right)\ gives\ 4$$
$$\left(19\triangle(9\triangle2)\right)\ gives\ 8\ $$
So, 4-8 should be -4.
Ans C.
Has anyone another approach to solve this PS question? Regards!
A. -8
B. -6
C. -4
D. 4
E. 6
The OA is C.
I solved it as:
$$\left((19\triangle9)\triangle2 \right)\ gives\ 4$$
$$\left(19\triangle(9\triangle2)\right)\ gives\ 8\ $$
So, 4-8 should be -4.
Ans C.
Has anyone another approach to solve this PS question? Regards!
