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Can someone answer these questions plz it's really important plz The seven members of the math contest club are standing in a line for a

Can someone answer these questions plz it's really important plz

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The seven members of the math contest club are standing in a line for a club photo. What is the probability that Jill and David are standing beside each other? [3] A group of environmental scientists from the University of Waterloo consists of 11 biologists and 6 ecologists. For the upcoming international environmental conference, a panel of 5 UW scientists will be selected at random to attend. What is the probability that 2 biologists and 3 ecologists are selected? [3]

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