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· prime-1
Divisibility & Primes · Prime patterns
AMC 10 style
●●●○○ 5/10
~3 min
⏱ 0:00
For how many primes
p
p
p
are
p
p
p
,
p
+
2
p+2
p
+
2
, and
p
+
4
p+4
p
+
4
all prime?
primes
modular-argument
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Hint 1 of 3
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