Question 288309
At a Grade 8 graduation dance, 11 friends ask the photographer to take
pictures of them two at a time. If each of the friends has his/her picture
taken with each of the other people, then the minimum number of pictures
that could be taken is
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Pick the 1st person: 11 ways
Pick the 2nd person: 10 ways
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Total number of pairs: 11*10 = 110
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Cheers,
Stan H.
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(a) 11 (b) 21 (c) 22 (d) 55 (e) 110