Question
Let $t_{n}=\underbrace{1.1 \ldots 1}_{n \text { times }}$, then(A) $t_{912}$ is not prime(B) $t_{951}$ is not prime(C) $t_{480}$ is not prime(D) $t_{91}$ is not prime
Step 1
1 \ldots 1}_{n \text { times }}$. We need to find out whether $t_{912}$, $t_{951}$, $t_{480}$, and $t_{91}$ are prime numbers or not. Show more…
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