flook
flook flook
  • 17-01-2017
  • Mathematics
contestada

can someone help with at least one of the questions in the attachment? thanks

can someone help with at least one of the questions in the attachment thanks class=

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JillyBeans
JillyBeans JillyBeans
  • 17-01-2017
for number 7 the pairs you can get are
A,B A,C A,D A,E 
B,C B,D B,E
C,D C,E
D,E
So the number of pairs are 10
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