Find integers T and R. (1) T!=R (2) R!=T

Question

Find integers T and R.

(1) T!=R
(2) R!=T

javropu · Answer

T!=R
R!=T=(T!)!=>T=1=>R=1 or T=2=>R=2

javropu · Answer

T!=R
R!=T=(T!)!=>T=1=>R=1 or T=2=>R=2

MartinMag · Answer

So how are we supposed to answer this question? C or E

There are two solutions: R=1;T=1 or R=2;T=2 

If we are asked for the value of T and R then the answer is E since we don't have one and only one value for T and R.

If we are asked for the possible numbers of T and R then the answer is C.


Is this correct? Or I'm just complicating things too much and answer is always C?

kpadma · Answer

In DS questions, it is required to find a unique solution.

Here we have two possible solutions. 

So, IMHO, the answer is E.

mciatto · Answer

If there are two possible values, even when they are combined, then the answer must be E.

stolyar · Answer

after combining the two sets, we have two pairs: (1, 1) and (2, 2)
Agree, it is E.

Find integers T and R. (1) T!=R (2) R!=T

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