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Evaluate (83)\binom{8}{3}(38).
Evaluate (4442).{44 \choose 42}.(4244).
What is the value of nnn if (n3)=35?{n \choose 3}=35?(3n)=35?
What value of nnn satisfies (n2)=528?{n \choose 2}=528?(2n)=528?
5 people became friends at a Summer Camp. On the last day, they shook each other's hands to say farewell. How many handshakes were there?
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