TMUA Practice Question — Worked Solution

P2·Number Theory & Divisibility·4.5CrackTMUA Original

no-counterexampletrue-claimmod-3squares

A student claims: 'for every positive integer

n

that is not divisible by

3

, the number

n^{2} - 1

is divisible by

3

.' Which option correctly responds to this claim?

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