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Which of the following is true?Ifp is prime and p l ab then p l a and p [b (6) f alc and blc;then (a + bylcThere are infinitely Many primes of the fOrm n"If al...

Question

Which of the following is true?Ifp is prime and p l ab then p l a and p [b (6) f alc and blc;then (a + bylcThere are infinitely Many primes of the fOrm n"If alb and alc: then albc)

Which of the following is true? Ifp is prime and p l ab then p l a and p [b (6) f alc and blc;then (a + bylc There are infinitely Many primes of the fOrm n" If alb and alc: then albc)



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If $\mathrm{px}^{3}+\mathrm{qx}^{2}+\mathrm{rx}+\mathrm{s}$ is exactly divisible by $\mathrm{x}^{2}-1$, then which of the following is/are necessarily true? (a) $\mathrm{p}=\mathrm{r}$ (b) $q=$ s (c) $\mathrm{p}=-\mathrm{r}$ (d) $\mathrm{q}=-\mathrm{s}$ (1) Both (a) and (b) (2) Both (c) and (d) (3) Both (a) and (d) (4) Both (b) and (c)


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