−5 −4 −3 −2 −1
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The number of <span>possible combinations can be calculated by formula 
.
</span>
<span>There are eight different concert dates that Jen could attend, then n=8.
</span>
Jen <span>can only afford to see three shows, then k=3
</span>
and<span>
</span>
<span /><span /><span>
</span><span />
<span>Answer: 56 possible combinations.</span>
</span>
<span>There are eight different concert dates that Jen could attend, then n=8.
</span>
Jen <span>can only afford to see three shows, then k=3
</span>
and<span>
</span>
<span /><span /><span>
<span>Answer: 56 possible combinations.</span>