are -10,-5, 0, 5, 20 all multiples of 5 ?
If yes, is it safe to assume that the following statement is a tautology:
"m is a multiple of n iff m/n is an integer, where m and n are integers"
Also, is tautology a noun? (have I constructed the above question sentencet correctly?)

 

Dear student
Yes you have constructed the above question correctly.
Yes, tautology is a noun.
Regards

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